Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Question
Chapter 33.4, Problem 1CC
Summary Introduction
To analyze:
The benefit of the presence of degrading enzymes in the synaptic cleft to break down neurotransmitter molecules.
Introduction:
Neurons form an important aspect of the nervous system. They are responsible for the transmission of a signal between different body parts.
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How does a signal cross the synaptic cleft?
What triggers neurotransmitter release at the synaptic cleft?
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Chapter 33 Solutions
Principles of Biology
Ch. 33.1 - Which of the following is false? The CNS of...Ch. 33.1 - Prob. 2TYKCh. 33.1 - Prob. 1CCCh. 33.2 - Prob. 1CCCh. 33.2 - Prob. 1BCCh. 33.2 - Prob. 1TYKCh. 33.2 - The resting membrane potential occurs because the...Ch. 33.3 - Are ions the only substances that can move through...Ch. 33.3 - Prob. 1CCCh. 33.3 - Prob. 2CC
Ch. 33.3 - Which is false? Graded potentials may die out or...Ch. 33.3 - Action potentials require a threshold potential...Ch. 33.4 - Prob. 1CCCh. 33.4 - Prob. 1TYKCh. 33.4 - Prob. 2TYKCh. 33.5 - Prob. 1BCCh. 33.5 - Prob. 1TYKCh. 33.5 - Prob. 2TYKCh. 33.6 - Prob. 1CCCh. 33.6 - Prob. 2CCCh. 33.6 - Prob. 3CCCh. 33.6 - Prob. 1TYKCh. 33.6 - Prob. 2TYKCh. 33.7 - Prob. 1TYKCh. 33.7 - Therapeutic drugs that reduce symptoms of...Ch. 33 - Prob. 1TYCh. 33 - Prob. 2TYCh. 33 - Prob. 3TYCh. 33 - Neurons that function mainly in connecting other...Ch. 33 - Prob. 5TYCh. 33 - Prob. 6TYCh. 33 - Prob. 7TYCh. 33 - Prob. 8TYCh. 33 - Prob. 9TYCh. 33 - Prob. 10TYCh. 33 - Describe the differences between graded and action...Ch. 33 - Prob. 2CCQCh. 33 - Prob. 3CCQCh. 33 - Prob. 1CBQCh. 33 - Prob. 2CBQ
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- Which types of patch clamp technique should be used if you want to determine if a particular compound is influencing synaptic transmission presynaptically or post synaptically?arrow_forwardWhat is the benefit of having synaptic enzymes breakdown neurotransmitter molecules?arrow_forwardWhich of the following statements about action potentials and information transmission in the synaptic cleft is FALSE? 1. Action potentials determine the amount of neurotransmitters that are released into the synaptic cleft 2.Action potentials ultimately result in more calcium leaving the target cell at the postsynaptic membrane 3. Action potentials determine the duration that neurotransmitters are released into the synaptic cleft 4. Action potentials ultimately result in more calcium entering the neuron at the axon terminalarrow_forward
- Which of the following is the role of axonal Calcium (Ca2+) channels in neuronal communication at the synapse? a) they inhibit the action potential causing it to stop b) Calcium channels have no role in this process c) by allowing calcium to exit the cell, they promote the propagation of action potential across the synapse by creating depolarization d) by blocking calcium entrance, they mediate the contraction of presynaptic axon to facilitate movement e) when they open, calcium enters the presynaptic terminal, promoting fusion of neurotransmitter vesicles with presynaptic membrane, and release of neurotransmitters to the synaptic cleftarrow_forwardWhat are Factors That Determine Synaptic Strength?arrow_forwardHow is synaptic transmission terminated?arrow_forward
- Which of the following statements concerning synapses is FALSE? O A) Modulation of synaptic strength can be presynaptic of postsynaptic B) High frequency stimulation in the presynaptic neuron often leads to DECREASED neurotransmitter release O C) Modulation of synaptic strength can either be short term, lasting seconds, or long term, lasting as long as a lifetime. D) Agonists are drugs that mimic neurotransmitters and antagonists are drugs that block the action of neurotransmitters O E) Certain drugs prevent the reuptake of neurotransmitter from the synapsearrow_forwardWhy are chemically- sensitive gated channels associated with receptors at the synapse and voltage-sensitive channels found along the axon?arrow_forwardHow the pre-synaptic neuron transmits an impulse (action potential) across the synaptic cleft to the post-synaptic neuron?arrow_forward
- What is the sequence of events from the arrival of the propagated action potential (a nerve signal) at the synaptic knob until the release of neurotransmitter into the synaptic cleft?arrow_forwardIf you increase the amount of neurotransmitter in the synaptic cleft, how would you expect the post-synaptic potential (PSP) to change? a) The PSP would be stronger b) The PSP would change from depolarizing to hyperpolarizing c) The PSP would not changearrow_forwardDiscuss the different mechanisms for removing neurotransmitter from the synaptic cleft.arrow_forward
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