Mastering A&p With Pearson Etext -- Standalone Access Card -- For Principles Of Human Physiology (6th Edition)
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Chapter 8, Problem 1E
Summary Introduction

Introduction:

Chemical synapses are specific junctions of the nervous system, non-neuronal cells like muscles or glands. Across these junctions, the cells pass signals to each other. A chemical synapse occurs between a motor neuron and a muscle cell. It is known as a neuromuscular junction. The nerve impulse passes the chemicals by the aid of neurotransmitters.

Expert Solution & Answer
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Answer to Problem 1E

Correct answer:

The correct answer is the option (a) Be an EPSP.

Explanation of Solution

Explanation/justification for the correct answer:

The correct option (a) Be an EPSP. EPSP is also known as an excitatory postsynaptic potential. It can be defined as a postsynaptic potential which forms the postsynaptic neuron more possibly to excite an action potential. It can also result from a drop in the outgoing positive charges and an increase in the outgoing negative charges. The electrochemical force for anion X (X-) acts to move the anion out of the cell. There is a reduction in the outgoing positive charges. So, when a neurotransmitter binds to its receptor opened channels for X- on the postsynaptic cell, then the response would be an EPSP. Hence, the option (a) is correct.

Explanation for incorrect answer:

Option (b) Be an IPSP. IPSP is also known as an inhibitory postsynaptic potential. It can be defined as a type of synaptic potential which forms a postsynaptic neuron possibly less to produce an action potential. Hence, option (b) is incorrect.

Option (c) Be stabilization of the membrane. Membrane stabilization is a process by which the local anesthetics function. They block the action potentials propagation through the nerve cells. Thus, it produces a nerve block. Hence, the option (c) is incorrect.

Option (d) Not occur. As an EPSP takes place in this situation. This option is not correct. Hence, option (d) is incorrect.

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Chapter 8 Solutions

Mastering A&p With Pearson Etext -- Standalone Access Card -- For Principles Of Human Physiology (6th Edition)

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