LAB MANUAL A&P & MOD MSTG/ET SA ACC PK
6th Edition
ISBN: 9780134838007
Author: Marieb
Publisher: PEARSON C
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Textbook Question
Chapter 11, Problem 11MC
An IPSP is inhibitory because (a) it hyperpolarizes the postsynaptic membrane, (b) it reduces the amount of neurotransmitter released by the presynaptic terminal, (c) it prevents calcium ion entry into the presynaptic terminal, (d) it changes the threshold of the neuron.
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Chapter 11 Solutions
LAB MANUAL A&P & MOD MSTG/ET SA ACC PK
Ch. 11.1 - What is meant by integration, and does it...Ch. 11.1 - Which subdivision of the PNS is involved in (a)...Ch. 11.2 - Which type of neuroglia controls the extracellular...Ch. 11.2 - Which two types of neuroglia form insulating...Ch. 11.3 - How does a nucleus within the brain differ from a...Ch. 11.3 - How is a myelin sheath formed in the CNS, and what...Ch. 11.3 - Which structural and functional type of neuron is...Ch. 11.3 - MAKING CONNECTIONS Which part of the neuron is its...Ch. 11.4 - For an open channel, what factors determine in...Ch. 11.4 - Prob. 10CYU
Ch. 11.5 - What determines the size of a graded potential?Ch. 11.6 - Which is bigger, a graded potential or an action...Ch. 11.6 - An action potential does not get smaller as it...Ch. 11.6 - Why does a myelinated axon conduct action...Ch. 11.6 - If an axon receives two stimuli close together in...Ch. 11.7 - Events at a chemical synapse usually involve...Ch. 11.7 - What structure joins two neurons at an electrical...Ch. 11.8 - Which ions flow through chemically gated channels...Ch. 11.8 - Prob. 19CYUCh. 11.9 - Prob. 20CYUCh. 11.9 - Why is cyclic AMP called a second messenger?Ch. 11.10 - Which types of neural circuits would give a...Ch. 11.10 - Prob. 23CYUCh. 11.10 - What pattern of neural processing occurs when we...Ch. 11 - Which of the following structures is not part of...Ch. 11 - Match the names of the supporting cells found in...Ch. 11 - Assume that an EPSP is being generated on the...Ch. 11 - Prob. 3MCCh. 11 - The velocity of nerve impulse conduction is...Ch. 11 - Chemical synapses are characterized by all of the...Ch. 11 - Biogenic amine neurotransmitters include all but...Ch. 11 - Prob. 8MCCh. 11 - Inhibition of acetylcholinesterase by poisoning...Ch. 11 - The anatomical region of a multipolar neuron where...Ch. 11 - An IPSP is inhibitory because (a) it...Ch. 11 - Identify the neuronal circuits described by...Ch. 11 - Explain both the anatomical and functional...Ch. 11 - (a) Describe the composition and function of the...Ch. 11 - (a) What is myelin? (b) How does the myelination...Ch. 11 - (a) Contrast unipolar, bipolar, and multipolar...Ch. 11 - What is the polarized membrane state? How is it...Ch. 11 - Describe the events that must occur to generate an...Ch. 11 - Prob. 19SAQCh. 11 - (a) Explain the difference between an EPSP and an...Ch. 11 - Since at any moment a neuron is likely to have...Ch. 11 - The effects of neurotransmitter binding are very...Ch. 11 - Prob. 23SAQCh. 11 - Prob. 24SAQCh. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...Ch. 11 - Elaine Sawyer, 35, was on her way to the local...
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- Assume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and presynaptic excitatory neuron B terminates on the same postsynaptic cell on a dendrite located on the side of the cell body opposite the axon hillock. Explain why rapid firing of presynaptic neuron A could bring the postsynaptic neuron to threshold through temporal summation, thus initiating an action potential, whereas firing of presynaptic neuron B at the same frequency and the same magnitude of EPSPs may not bring the postsynaptic neuron to threshold.arrow_forwardWhy do neurotransmitters have to be removed from the synapse?arrow_forwardInhibitory postsynaptic potentials cause what type of change at the post-synaptic membrane?arrow_forward
- How much of a change in the membrane potential is necessary for the summation of postsynaptic potentials to result in an action potential being generated?arrow_forwardWhat is an excitatory postsynaptic potential?arrow_forward. What series of events stimulates a presynaptic neuron to releaseneurotransmitters?arrow_forward
- When the action potential reaches the presynaptic terminal, which ion must enter the presynaptic terminal to evoke release of the neurotransmitter?arrow_forwardWhy don’t neurons typically release more than one type of neurotransmitter? (arrow_forwardWhat is the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential ? How does it effect the postsynaptic neuron?arrow_forward
- In the central nervous system there may be many synaptic inputs on a postsynaptic neurons. How does the postsynaptic neuron respond to the many presynaptic inputs?arrow_forwardWhat is the postsynaptic density?arrow_forwardDistinguish between presynaptic & postsynaptic neurons and between axodendritic, axosomatic & axoaxonic synapsesarrow_forward
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