The correct answer is option d. Hillocks, collaterals, and terminals are associated with the axon part of a neuron.
The long, thin projection of a neuron known as the axon is responsible for carrying electrical impulses out of the cell body in most cases. Structures on an axon include terminals, hillocks, and collaterals.
Hillocks, which are tiny axonal swells that can serve as branching sites, are present in the body. Collaterals are branches that can develop off the axon and are utilised to link to other neurons.
The terminals at the end of an axon are where impulses are sent to other cells. In summary, hillocks, collaterals, and terminals are related with a neuron's axon and are critical components of neural transmission.
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guard cells straighten our when water pressure
Guard cells help to maintain homeostasis. The guard cells straighten out when water pressure decrease.
Guard cells are the plant cells in the epidermis of leaves and other organs are used to control gas exchange.
The shape of the protective cells changes due to the change in the amount of water in them. Guard cells work of regulating the opening and closing of the stomata.As water flows into the guard cells, it swells and causes the stomata to open.Stomata are the primary control mechanism plants use to reduce water loss, and they are able to do so quickly. During photosynthesis it allowed the movement of CO₂ and released O₂ in the atmosphere. The closure of stomata during the night prevents water loss through pores. When the guard cells lose water, they shrink and sag and straighten, causing the stomata to close. The protective cells straighten when the water pressure drops.
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Complete question :
Guard cells straighten out when water pressure __________.
severe symptoms of hypoglycemia could be confused with
Severe symptoms of hypoglycemia could be confused with dru-nkeness, blur-red vision, and coma.
Symptoms usually occur when blood sugar levels fall below four millimoles (mmol) per litre. Typical early warning signs are feeling hungry, trembling or shakiness, and sweating. In more severe cases, you may also feel confused and have difficulty concentrating. Hypoglycemia, from any cause, of any severity or length can also additionally mimic ischa-emic stroke neurologically and on CT or MR mind imaging. Severe hypoglycemia can arise in humans with diabetes who're taking insulin and sure diabetes medications, or adjustments in normal health. For example: Eating much less than the same old amount. Skipping a meal.
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Complete question-
Severe symptoms of hypoglycemia could be confused with _____.
When comparing the diffusion rate of a substance in different media, (Check all that apply)a. the diffusion rate is greater in the liquid than in the solid.b. the more solid the medium, the faster the diffusion rate.c. the diffusion through a gas will be faster than through a liquid.d. the diffusion through a solid will be slower than through a gas.e. the diffusion rate for the substance is the same in all media.
When comparing the diffusion rate of a substance in different media, it is found that the diffusion rate is greater in a liquid than in a solid, and the diffusion through a gas will be faster than through a liquid, the diffusion through a solid will be slower than that through a gas, as shown in option A, C, and D.
What is diffusion?Diffusion occurs more rapidly in liquids than in solids because the particles in liquids are more mobile and have more kinetic energy, in gases, the particles are more widely spaced and move more rapidly than in liquids, and diffusion in solids is slower.
Hence, the diffusion rate is greater in a liquid than in a solid, and the diffusion through a gas will be faster than through a liquid, the diffusion through a solid will be slower than that through a gas, as shown in option A, C, and D.
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The Km of an enzyme is 5.0 mM. Calculate the substrate concentration when this enzyme operates at one-quarter of its maximum rate. substrate concentration: mM Determine the fraction of Vmax that would be obtained when the substrate concentration, [S], is 0.5 Km. Round your answer to two significant figures. Vmax fraction: Enter numeric value Curve 1 An enzyme that catalyzes the reaction X = Y is isolated from two bacterial species. The enzymes have the same Vmax but different Km values for the substrate X. Enzyme A has a Km of 2.0 MM, and enzyme B has a Km of 0.5 uM. Kinetic experiments used the same concentration of each enzyme and 1 uM of substrate X. [Y] Curve 2 The graph plots the concentration of product Y formed over time. Time Based on the graphs and Km values of each enzyme, curve 1 corresponds to and curve 2 corresponds to
This enzyme uses 0.333 times as much substrate concentration as it can at its 25% maximal rate.
The connection between substrate concentration and Km
In actuality, Km is the substrate concentration at which the enzyme may accomplish half of Vmax. Because Km is a constant, raising the substrate concentration has no impact on it. An enzyme with a high Km has a poor affinity for its substrate and needs a larger concentration of substrate to achieve Vmax. The substrate concentration Km is equivalent to the substrate concentration at which the enzyme-catalyzed reaction proceeds at a rate that is half that of the maximum reaction rate.
V₀=Vmax(5)/5+Km
v₀/Vmax=5/5+km
=0.5km/1.50+km
=0.33
A protein-based molecule known as an enzyme speeds up a certain chemical reaction.
The Michaelis-Menten Equation is used to determine the connection between the substrate and reaction rate.
Vmax[S] = Vmax[Km + [S]
where V is the initial velocity, Km is the affinities measure, and S is the concentration of the substrate.
V = 0.25 [5.0] / 1/4 [5.0] .0]
V =1.67
The result of applying one quarter to the given equation is 1.67 mM.
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What are the major blood vessels that supply blood to the head and neck?
The carotid arteries are the vital ships feeding blood to the cerebrum and face. The right normal carotid store route begins in the neck from the brachiocephalic hall while the left normal carotid tube stems in the chest from the curve of the aorta.
The cerebrum gets blood from two sources: the interior carotid supply routes, which emerge at the point in the neck where the normal carotid corridors bifurcate, and the vertebral conduits. The interior carotid supply routes branch to shape two significant cerebral corridors, the foremost and center cerebral conduits.
The jugular veins are significant veins that stretch from your head to your upper chest. Ordinarily, there are three sets of jugular veins — six altogether — every one of which coordinates blood from various regions of your head toward your heart.
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new nail growth comes from the _.
Under the cuticle, at the nail root, are where nails begin to grow. New nail cells at the nail's root push out the older nail cells as they expand.
Typically, all of the aged cells stiffen and flatten.
Keratin, a protein produced by these cells, is largely to blame for this. The freshly produced nail then proceeds down the nail bed, which is the flat area beneath your nails. The typical growth rate of your fingernails is 3.47 millimetres (mm) every month, or roughly 0.1 millimetre per day. The length of a short rice grain, for comparison, is approximately 5.5 mm. It could take up to six months for your fingernail to fully regrow if you lose one.
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Predict the outcome of a mating between a longer-necked giraffe and a shorter-necked giraffe that both live in an environment with tall trees, if(a) the blending inheritance hypothesis was correct
If the blending inheritance hypothesis were true, forecast the result of a mating between a longer-necked and a shorter-necked giraffe that both inhabit an environment with tall trees. Children's necks would be of medium size. The correct answer is option(a).
The blended inheritance hypothesis desires that the physical characteristics (or phenotypes) of the child are an in-between of the persons. For example, if an unreasonable he and a short she have a youth, this hypothesis concludes their infant would have a crest middle concerning her persons.
Heredity is an essential factor in evolution. In order for a metamorphosis to matter in the unending, it has to receive previously owned to future production in a trustworthy habit. There are few forms of heredity that concede the possibility of not having everything commotion accompanying progress, but you can't have progress outside heredity.
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The complete question is:
Predict the outcome of a mating between a longer-necked giraffe and a shorter-necked giraffe that both live in an environment with tall trees, if(a) the blending inheritance hypothesis was correct:
a) Offspring would have necks of medium size due to blending inheritance.
b) Offspring would have longer necks than either parent, acquired characters.
why cactus flowers bloom at night.
It reduces competition for pollinators by other plants, allowing the cactuses to bear more fruit.
Answer:
Most cactus bloom at night because of nocturnal pollinators
Explanation:
Which role does the protein cytochrome p450 play in the human body?
O It transports waste products out of cells.
O It regulates blood sugar levels
O It constructs cell membranes.
O It breaks down unfamiliar chemicals.
The role of the protein cytochrome p450 in the human body is It breaks down unfamiliar chemicals.
option D
Which is the role of protein cytochrome p450 ?
The protein cytochrome P450 plays a crucial role in breaking down and eliminating many different types of foreign substances, including drugs, toxins, and environmental pollutants, from the human body. It is primarily involved in the process of drug metabolism and is found in many different tissues and organs, particularly the liver.
Cytochrome P450 enzymes help to convert these foreign substances into more water-soluble forms that can be easily excreted from the body, thus protecting the body from potentially harmful effects.
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Answer: it breaks down unfamiliar chemicals.
Explanation: i took the test !
What are the role of proteins in an organism (select 4)?
Answer: Four main roles of proteins are
(a) Acting as enzymes
(b) Structural Support
(c) Transport and storage
(d) Defense and protection
Explanation:
Proteins are an essential biomolecules and they help an organism in various ways.
Enzymes: Many proteins act as enzymes, which catalyze or speed up chemical reactions in the body. Enzymes are involved in many processes, including digestion, metabolism, and DNA replication.
Structural support: Many proteins provide structural support to cells and tissues. For example, collagen is a fibrous protein that makes up skin, tendons, and bone structural framework.
Transport and storage: Some proteins serve as carriers that transport molecules such as oxygen, hormones, and nutrients throughout the body. Other proteins act as storage molecules, such as ferritin, which stores iron in the liver and spleen.
Defense and protection: Some proteins are involved in the immune system and act as antibodies or other defense molecules to protect the body from foreign substances, such as bacteria or viruses. Other proteins act as molecular chaperones, helping other proteins fold correctly and preventing the formation of harmful protein aggregates.
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Can you breed two different types of animals?
Answer:
Yes
Explanation:
you can to give a different spicies of animals
what is the average shoe size for women?
In the 1960s, a woman's average foot size in the United States was 6.5. In the 1970s, it reached 7.5. The typical female foot in the US was a size 6.5 in the 1960s (equal to a UK size 4) and increased to a size 7.5 in the 1970s (UK 5).
Although there are no official figures available, anecdotal information from shoe sales staff suggests that the typical shoe size for ladies right now is roughly a U.S. 7 to 8.
Some people might be surprised to learn that the average American woman's foot size ranges from an 8.5 to a 9, as opposed to the 7.5 it was on average until quite recently. Yet, it is not simply a British phenomenon.
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The Neutral Gator program used methods that _____.a) reduced the amount of carbon dioxide already in the atmosphereb) decreased production of carbon dioxide and reduced the amount of carbon dioxide already in the atmospherec) decreased production of carbon dioxided) increased production of carbon dioxide
b) Decreased production of carbon dioxide and reduced the amount of carbon dioxide already in the atmosphere.
An programme of Earth Givers, a nonprofit organisation dedicated to lowering carbon emissions through energy efficiency and carbon sequestration initiatives, is Neutral Gator.
The natural greenhouse effect of carbon dioxide on Earth would be insufficient to maintain the average global surface temperature above freezing. People are boosting the natural greenhouse effect by increasing atmospheric carbon dioxide, which raises the earth's temperature.
The gas that absorbs and radiates heat, carbon dioxide, is the most significant greenhouse gas on Earth. Unlike oxygen or nitrogen, which make up the majority of our atmosphere, greenhouse gases absorb heat radiating from the Earth's surface and re-emit it in all directions, including towards the surface. The natural greenhouse effect of carbon dioxide on Earth would be insufficient to maintain the average global surface temperature above freezing.
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You have probably seen movies depicting the world after natural disasters have changed the climate, or reduced the availability of food, water, or even space to live. Work with a partner to brainstorm what could happen in one of these situations. Then write a short movie script describing what might happen in your community if these resources became very limited.
Answer: Soil erosion, Global Warming caused by the rise of greenhouse gases- Extinction of species and loss of biodiversity, Flooding, and drought could happen if disasters have changed the climate, or reduced the availability of food, water, or even space to live.
Explanation: Hope this helped
With rising worldwide surface temperatures, there is a greater chance of more droughts and stronger storms. As more water vapour evaporates into the atmosphere, it serves as fuel for the development of more intense cyclones.
What are the effects of climate change and natural catastrophes on our ecosystem and people?Climate change is indeed having an effect on health in a variety of ways, including the increased frequency of severe weather events such as heatwaves, cyclones, and floods, the disruption of food systems, rises in zoonoses and food-, water-, and vector-borne illnesses, and mental health problems.
Why is climate change a potential disaster?Climate change will thus affect disaster risks in two ways: first, by increasing the likelihood of weather and climate hazards, as well as the effects of sea-level rise; and second, by increasing the vulnerability of communities to natural hazards as a result of ecosystem degradation, water and food shortages.
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Using complete sentences, compare and contrast the terms living and biotic.
Biotic elements and living creatures can both be alive. Biotic things, in contrast to living things, might not currently be alive but may have formerly been alive or descended from a living creature. I gave a flower as an illustration of something that is both biological and living. I used the example of paper, which is biotic but not life.
Are people biotic or abiotic?Humans play a biotic role in ecosystems as well. Human activities frequently have negative effects on other organisms. We compete for resources with some animals, prey on others, and change the habitat of still other organisms.
What are biotic and abiotic terms?An ecosystem's biotic factors include living things like plants, animals, and microbes, while its abiotic elements include things like water and the atmosphere.
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the viral structure responsible for recognizing specific host cells isa glycoproteingenetic material.a retrovirus.a bacteriophage.
The viral structure responsible for recognizing specific host cells isa glycoproteingenetic material is retrovirus.
What is virus ?
A segment of nucleic acid (DNA or RNA) encased in a protein coat, either DNA or RNA, makes up a virus, an infectious bacterium. Viruses are unable to multiply on their own; instead, they must infect cells in order to utilise the components of the host cell to make copies of themselves.
What is retrovirus ?
A specific class of virus whose genetic makeup is composed of RNA rather than DNA. It integrates into the DNA of the host cells using the reverse transcriptase enzyme. The virus can multiply many times in the host cells as a result.
Therefore, The viral structure responsible for recognizing specific host cells isa glycoproteingenetic material is retrovirus.
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DNA fragments are negatively charged and travel to the positively-charged electrode in capillary electrophoresis. TrueorFalse
True. In capillary electrophoresis, negatively charged DNA fragments move towards the positively charged electrode.
Due to their negative charge, DNA fragments gravitate towards to the positive electrode. Smaller DNA fragments migrate through the gel more quickly than larger ones because they all have the same charge per mass. DNA has a positive charge and is drawn to an agarose gel that has a negative charge. Negatively charged molecules like DNA and RNA will be drawn to the positively charged top of the gel. The negative charged fragments are pushed into the capillaries by a high-voltage charge delivered to the buffered decoding procedure. Because larger pieces move through the matrix more slowly than smaller fragments, the Plasmid dna are sorted based on size.
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Condensation of chromosomes continues throughout:A. Prophase.
B. DNA
C. Telophase.
D. growth
Answer: A
Explanation: prophase
Type the correct answer in the box. Name the type of allele.
A stronger allele that exhibits its trait even if it is present as a single copy is which kind of alle?
#platofam
Answer:
Dominant
Explanation:
if the trait is at all present this is usually down to a dominant allele
In the 1940s, proteins were thought to be the more likely molecules to house genetic information. What was the primary reason that DNA was not originally believed to be the genetic material?
(a) DNA has a high density of negative charges.
(b) Nucleotides were known to be a source of chemical energy for the cell.
(c) Both protein and nucleic acids were found to be components of chromosomes.
(d) DNA was found to contain only four different chemical building blocks.
The primary reason that DNA was not originally believed to be the genetic material is that DNA was found to contain only four different chemical building blocks. The correct option is Option D.
Proteins were earlier thought to be the carriers of genetic material. This was thought because they had a more complex structure, being made up of 20 different amino acids. The analysis of DNA is important in the understanding of both the biological mechanisms of life and diseases that arise when this process goes wrong. Many other different applications have been developed to understand this process. These scientists analyses the molecule through a range of techniques, including DNA sequencing which helps work out its structure, through to PCR, which rapidly amplifies tiny quantities of DNA into billions of copies.
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The second heart sound is heard during which phase of the cardiac cycle? Select one: a. ventricular ejection b. ventricular filling c. isovolumetric relaxation
The second heart sound is heard during the phase of the cardiac cycle called isovolumetric relaxation.
The correct option is C.
What is the cardiac cycle?The cardiac cycle describes how the human heart works from the start of one heartbeat to the start of the next. It comprises of two phases: systole, when the heart muscle is strongly contracted and pumps blood; and diastole, when the heart muscle relaxes and fills with blood.
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How many chromosomes does a blackberry have?
Blackberry belongs to the subgenus Rubus, is tetraploid (2n=4x=28) and has a haploid number of 14.
A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibers in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
Sex chromosomes and autosomes are the two primary types of chromosomes found in many organisms with distinct sexes. All features are inherited under the direction of autosomes, with the exception of those that are sex-related and are governed by the sex chromosomes.
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why was the evolution of a coelom a critically important innovation for animals? view available hint(s)for part a why was the evolution of a coelom a critically important innovation for animals? it enables the internal organs to move independently of the outer tubes, or exterior of the animal. the coelom separates vertebrates from invertebrates. the coelom made it possible for animals to colonize land. the coelom gives rise to a complex nervous system.
Evolution of coelom is critical because, A, it enables the internal organs to move independently of the outer tubes, or exterior of the animal.
How did the coelom evolve over time?The evolution of a coelom, or a fluid-filled body cavity surrounded by mesoderm, allowed for the development of a more complex and specialized organ system in animals. The coelom provided a space for the internal organs to move independently of the outer tubes, which allowed for greater efficiency and specialization of organ function.
It also provided protection for the organs, allowing them to be shielded from external pressures and impacts. The evolution of a coelom was a critically important innovation for animals.
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How do introns contribute to the regulation of gene expression
what conditions prompt hemoglobin to release oxygen?
Hemoglobin is a protein in red blood cells that binds to oxygen in the lungs and carries it to tissues throughout the body.
The release of oxygen from hemoglobin is regulated by several factors, including the concentration of oxygen in the tissues, the concentration of carbon dioxide in the blood, and the pH of the blood.The main factor that prompts hemoglobin to release oxygen is a decrease in the concentration of oxygen in the tissues. This occurs when the tissues are actively using oxygen to produce energy through cellular respiration. As the concentration of oxygen in the tissues decreases, hemoglobin undergoes a conformational change that makes it more likely to release its bound oxygen. This process is known as the Bohr effect. Another factor that can prompt hemoglobin to release oxygen is an increase in the concentration of carbon dioxide in the blood. Carbon dioxide is produced as a byproduct of cellular respiration and can build up in the blood if it is not removed through breathing. When carbon dioxide levels increase, the blood becomes more acidic, which can promote the release of oxygen from hemoglobin. Finally, changes in the pH of the blood can also prompt hemoglobin to release oxygen. Hemoglobin is more likely to release oxygen in an environment with a lower pH (i.e., more acidic), which can occur when tissues are producing high levels of carbon dioxide and lactic acid during periods of high metabolic activity.
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What are the 4 main types of muscles?
There are four main types of muscles in the human body, each with a distinct structure and function: Skeletal muscle, Smooth muscle, Cardiac muscle and visceral muscle.
Skeletal muscle: Skeletal muscles are attached to bones by tendons and are responsible for voluntary movement of the body. They are striated (striped) in appearance and under conscious control.
Smooth muscle: Smooth muscles are found in the walls of internal organs, such as the digestive system, blood vessels, and uterus. They are not striated and are under involuntary control.
Cardiac muscle: Cardiac muscle is found only in the heart and is responsible for pumping blood throughout the body. Like skeletal muscle, cardiac muscle is striated, but it is under involuntary control. T
Visceral muscle: Which is found in the walls of hollow organs such as the stomach and intestines. Visceral muscle is a type of smooth muscle and is responsible for regulating organ function and movement of substances through the body.
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which part of a membrane protein is found in contact with the interior of the lipid bilayer?
A membrane protein's non-polar region is found in touch with the lipid bilayer's interior.
The lipid bilayer's interior is non-polar, but its heads are made up of polar molecules that form hydrogen bonds with other polar molecules. This also means that polar molecules like water and ions won't be able to pass through the lipid bilayer's nonpolar tail region as easily. The lipid bilayer contains integral membrane proteins all at once. Although peripheral membrane proteins are not directly inserted into the lipid bilayer, they are nonetheless indirectly connected to the membrane, typically through interactions with core membrane proteins.
According to the Fluid Mosaic model of the cell membrane, only one of the answer options—"Proteins are embedded in the fluid bilayer of lipids"—is accurate.
The component is hence known as a non-polar segment.
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why are plants eukaryotic
Plants, like most multicellular organisms, are eukaryotic. Eukaryotic cells are characterized by having a true nucleus, which contains the organism's genetic material, in the form of DNA, enclosed within a membrane.
Additionally, eukaryotic cells are typically larger and more complex than prokaryotic cells, which lack a true nucleus and other membrane-bound organelles. Plants, like other eukaryotes, have many different types of organelles within their cells, including mitochondria, ribosomes, and chloroplasts. Chloroplasts are unique to plant cells and are responsible for photosynthesis, the process by which plants convert light energy into organic compounds, such as glucose. Additionally, plant cells have a rigid cell wall made of cellulose that provides structural support and protection.
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what does your body use to transduce specific external stimuli into neural activity?
External stimuli are converted into neural activity by a complex interaction of specialised sensory receptors, ion channels, neurotransmitters, and other signalling molecules.
Various sorts of environmental inputs are converted into neuronal activity by the body's sensory receptors. The following are some examples of transduction pathways for typical types of stimuli:
Light: Photoreceptor cells in the retina convert light into neural activity. These cells contain light-sensitive pigments known as rhodopsin and cone opsin, which change form as photons of light are absorbed. This sets off a chain of chemical events that eventually create electrical impulses in photoreceptor cells.
Sound: The inner ear's hair cells convert sound waves into neuronal activity. These cells are found in the cochlea, an inner ear spiral-shaped organ. As sound waves reach the cochlea, they vibrate the hair cells, causing the production of neurotransmitters that excite the auditory nerve fibres.
Touch: The skin has a variety of touch receptors that convert various mechanical impulses into neuronal activity. Meissner's corpuscles, for example, sense mild touch and vibrations, whereas Pacinian corpuscles detect deep pressure and quick vibrations. As mechanical stimuli distort these receptors, they create electrical impulses.
Taste and smell receptors translate chemical impulses into brain activity. In the case of taste, taste receptor cells on the tongue respond to different types of chemicals in food. When these molecules attach to the receptors, they cause neurotransmitters to be released, which excite the sensory nerve fibres. In the case of smell, odorant molecules in the air attach to receptors in the nasal cavity's olfactory epithelium, activating olfactory receptor neurons and sending signals to the brain.
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blood from the digestive viscera, spleen and pancreas are brought to the liver via the____
Blood from the digestive viscera, spleen and pancreas are brought to the liver via the hepatic portal vein