Where are neurotransmitter receptors located?(A) the nuclear membrane(B) the nodes of Ranvier(C) the postsynaptic membrane(D) synaptic vesicle membranes
Q: If a pre-synaptic cell releases a large amount of excitatory neurotransmitter into the synaptic…
A: Neurons are excitable cells that are specialized to carry electrical signals, often across long…
Q: Which of these would affect an electrical synapse?
A: Synapses are gaps that separate the terminal buttons of one neuron from receptors of another neuron.…
Q: What do you mean by neuroglia?
A: Nervous system provides an organised network of point to point connections for quick neural…
Q: Which type of neuron, based on its shape, is bestsuited for relaying information directly from one…
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Q: An action potential is propagated down the ????? of a presynaptic cell resulting in the release of…
A: A nerve impulse is transmitted from one neuron to another through junctions called synapses. A…
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A: The resting membrane potential refers to the state where the potential across the membrane of…
Q: In the central nervous system, which of the following cells is thought to play a supporting role in…
A:
Q: Receptors for serotonin and many other neurotransmitters (a) are voltage-activated ion channels (b)…
A: Neurotransmitters like serotonin are responsible for the conduction of the impulses across the…
Q: ntinuously?
A: Given: Need to define how is a neuron prevented from firing potentials continuously
Q: hen a neuron opens voltage-gated Na+ channels, what happens to the membrane potential?
A: Introduction: Voltage-gated Na+ channels initiate and propagate action potentials in neurons and…
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Q: What is action potential?
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A: Toxins are very unstable.
Q: Why are voltage-gated channels important?
A: Facilitated diffusion is a passive transport of ions, which means this process does not need energy…
Q: Which of these is least likely to trigger an action potential in a post-synaptic cell? A)EPSPs and…
A:
Q: Explain why neurons could not function without the properties of excitability, conductivity, and…
A: Neurons are the basic unit of the nervous system. They are also the largest cells found in our body.…
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A: The permeability of a cell refers to the transportation of ions that occurs through the cell…
Q: How would nervous system function be affected if both the presynaptic and postsynaptic neurons at…
A: The synaptic vesicles are missing toward the end of neuron and subsequently postsynaptic neuron…
Q: Describe how following a threshold stimulus, a action potential is carried along an unmyelinated…
A: Myelination refers to the presence of a myelin sheath on the axons. Myelin sheath is composed of…
Q: What is the typical resting membrane potential of a neuron?
A: When a cell is not excited, its resting membrane potential is known as the electrical potential…
Q: What is the Structure of Neurons?
A: Nervous System cells are called Neurons. A Neuron has 4 parts : Dendrites. Cell body (Soma). Axon.…
Q: Name the three basic types of neuron and describe their functions.
A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…
Q: What is the function of myelin sheaths? Where are they found?
A: The nervous system is the network of neurons and nerve fibers that functions to transmit nerve…
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A: Neurons are nerve cells that transmits the nerve signals across the neurons. The neuron sends the…
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A: Neuron or Nerve cell that help in conduction of signal from receptors to the target organ.
Q: Why is that if A, B, and D neurons were all activated, an action potential in neuron C would not…
A: Because A and D are excitatory neurons and when B is activated it suppresses the activity of A which…
Q: How does the extended length of a neuron’s processes aid its function in the body?
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Q: What does it mean to say that action potentials are “all or none”?
A: Introduction :- A depolarizing current causes an explosion of electrical activity, which is known as…
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Q: There are several different neurotransmitter system in the brain.why do you think there is such…
A: Neurotransmitters are the chemical messengers that transmit action potential between neurons or from…
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A: Introduction: Neurotransmitters is the chemical messengers our body can't function without it…
Q: What properties of ion channels allow them to generate the large, rapid changes in membrane…
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Q: What are the functionaldivisions of the nervoussystem?
A: The coordination between various functions as well as behaviour happened through nervous system in…
Q: how many molecules of neurotransmitter are in a synaptic vesicle?
A: Neurotransmitters are specific signalling molecules that are responsible for synaptic transmission…
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Q: What part of the membrane composition of a neuron is most important for the permeability of the…
A: b: There are proteins embedded in the membrane
Q: The influx of calcium into the axon terminal of a chemical synapse is responsible for
A: Chemical synapse is a specialized biological junction through which cells present in nervous system…
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A: A neuron is the basic unit of the nervous system that is responsible for communicating to other…
Q: We know the action potential threshold regulates whether a neuron fires an action potential or not.…
A: Action potential refers to the rapid increase followed by decrease in the voltage or membrane…
Q: In chemical terms how isthe neuronal repolarizationachieved?
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Q: You are investigating the effects of a newly discovered cell type. You have an intact synapse…
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Q: How can only positive ions result in depolarization and repolarization of the membrane during an…
A: Membrane potenial/ transmembrane potential/ membrane voltage in the electrical potential difference…
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A: The nervous system is structured in a hierarchical or ladder-like manner. Neurons work in groups…
Q: Let’s examine a neural pathway that involved three (3) neurons in sequence: one propagates an action…
A: Neurons are the basic unit of the nervous system that carry electrical stimuli throughout the body.…
Where are neurotransmitter receptors located?
(A) the nuclear membrane
(B) the nodes of Ranvier
(C) the postsynaptic membrane
(D) synaptic vesicle membranes
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- What is the role of ions, the phospholipid bilayer, and plasma membrane channels in neurons relative to the concepts of current, voltage, and resistance?Why don’t neurons typically release more than one type of neurotransmitter? (Draw a simple schematic of a neuron and label its parts. Where does “information” usually go in and through which structure is it passed on? Where is the action potential generated?
- Neurons, particularly those in the brain, receive multiple excitatory and inhibitory signals. What is the name of the extension of the neuron at which such signals are received? How does the neuron integrate these signals to determine whether or not to generate an action potential?Many neurons have only a single axon, but many terminals at the end of the axon. How does this end structure of the axon support its function?Why is that if A, B, and D neurons were all activated, an action potential in neuron C would not occur. But if A and D were activated, an action potential in C would occur?
- What properties of ion channels allow them to generate the large, rapid changes in membrane potential?Using your knowledge of the central nervous system and various cell-cell interactions, identify the key type(s) of cell junctions in the human cerebral cortex tissue. Briefly describe the function of these cell junctions. How would the function of the central nervous system be impaired if your above identified cell junctions were disrupted?Neural pathway transmit impulses which terminate at what? a) motor cortex, b) somatosensory cortex, c) mechanoreceptors, d) thalamus, e) brainstem, f) skeletal muscle, g) cerebellum?