EBK BIOLOGY
5th Edition
ISBN: 9780133954425
Author: Maier
Publisher: YUZU
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Textbook Question
Chapter 23, Problem 9LTB
The effects of a neurotransmitter could be increased by ___________,
- increasing the number of receptors on the postsynaptic cell;
- preventing reuptake;
- providing more enzymes involved in synthesizing the neurotransmitter;
- inhibiting enzymes involved in breakdown of the neurotransmitter from the synapse;
- all of the above
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A/An _____ synapse is formed when a presynaptic neuron synapses with the cell body of a postsynaptic neuron
An action potential has reached the axon terminal of a presynaptic cell. As a result of the action potential you would expect the movement of __________ into the presynaptic cell and the movement of __________ out of the presynaptic cell.
Calcium : neurotransmitter
Sodium : calcium
Neurotransmitter : calcium
Sodium : neurotransmitter
______Synaptic potentiation ____ _________results when a presynaptic cell is stimulated repeatedly or continuously, resulting in an __________ release of neurotransmitter.__________ __________results when another neuron __________ the release of an excitatory neurotransmitter from a presynaptic cell.
Chapter 23 Solutions
EBK BIOLOGY
Ch. 23 - How do the CNS and PNS differ?Ch. 23 - How do sensory, motor, and interneurons differ?Ch. 23 - What are the general senses?Ch. 23 - Which brain structure controls language, memory,...Ch. 23 - Prob. 5LTBCh. 23 - Prob. 6LTBCh. 23 - Prob. 7LTBCh. 23 - Neurotransmitters. ___________. are electrical...Ch. 23 - The effects of a neurotransmitter could be...Ch. 23 - Prob. 10LTB
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- When action potentials arrive at a synapse between a neuron and another cell, they stimulate the release of molecules of a ________ that diffuse over to that cell.arrow_forward________ "mimic" or enhance the action of certain neurotransmitters. Select an answer from the options below Myelinated axons Antagonist drugs Endorphin drugs Agonist drugsarrow_forwardBoth of these Neither of these QUESTION 28 During the process of muscle relaxation, changes to the sarcomere include: Increased size of the l-band Decreased size of the H-zone Increased size of the A-band All of the above OUESTION 30 Click Save and Submit to save and submit. Click Save All Answers to save all answers.arrow_forward
- Neurotransmitters are synthesized in____________ and are stored in _____________ .arrow_forwardThese neurons belongs to the CNS: (More than one possible choice) A neuron in the brain A neuron carrying a signal into a skeletal muscle A neuron carrying a signal into cardiac muscle A neuron carrying signals form receptors in the skin A neuron carrying signals from the stomach a neuron in the spinal cord grey matterarrow_forwardIncreasing the amount of action potentials that arrive at the presynaptic terminal will: (Can pick more than one) Increase the number of vesicles that fuse with the presynaptic membrane Increase the amount of depolarization in the terminal Increase the amount of neurotransmitter released. Increase the amount of Ca2+ that enters the presynaptic terminal.arrow_forward
- At a given synapse, the _____ neuron has neurotransmitter receptors.arrow_forwardSelect all criterion for classifying a substance as a neurotransmitter. (select all that apply) Existence of the substance in the presynaptic terminal. Release of the substance when nerve impulses reach the terminal ending. Existence of specific receptors for the substance on the postsynaptic membrane. Ability of the substance to travel long distances between the site of origin and the target area.arrow_forwardIn terms of function when a presynaptic neuron receiving input from a nearby inhibitory neuron, it can be inferred that the both neurons firing won't be synchronized activation of the inhibitory neuron is nullified activation of the presynaptic neurotransmitter release is enhanced this type of interaction represents a regulatory input of neuronal activationarrow_forward
- where are the locations you can these neurotransmitters: Norepinephrine Epinephrine Serotonin Glutamate Gamma-aminobutyric acid (GABA) Acetylcholinearrow_forwardSpastic paralysis (resulting from the failure of muscles to relax), induced by the neurotoxin strychnine, occurs when this poison blocks the binding of: the excitatory neurotransmitter acetylcholine to post-synaptic sodium channels the excitatory neurotransmitter glutamate to post-synaptic calcium channels the excitatory neurotransmitter serotonin to post-synaptic potassium channels the inhibitory neurotransmitter glycine to post-synaptic chloride channels the inhibitory neurotransmitter melatonin to post-synaptic bicarbonate channelsarrow_forwardPhenytoin (sodium channel blocker) and ethosuximide (calcium channel blocker) are anti-seizure drugs that stop seizures from happening. These drugs work by inhibiting electrical impulses (action potentials) from occurring. Explain the importance of sodium and calcium channels on a neuron and the reasons why action potentials do not occur when these channels are inhibited. Thank youarrow_forward
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