A&P CONNECT ACCESS CARD - SP
A&P CONNECT ACCESS CARD - SP
4th Edition
ISBN: 9781266185168
Author: McKinley
Publisher: MCG
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Chapter 12, Problem 1DYKB
Summary Introduction

Introduction:

Synapses are the connecting zone or the junctional region between two nerve cells. These regions help in the conduction of the nerve impulses from one neuron to the axon. A synaptic region is generally located between the axon of one neuron and the dendrites of the subsequent one.

Expert Solution & Answer
Check Mark

Answer to Problem 1DYKB

Correct answer:

The correct answer is option (a) they release neurotransmitters into the synaptic cleft.

Explanation of Solution

Explanation/justification for the correct answer:

Option (a) the axon terminals (of nerve cells) have round knob-like structures called synaptic knobs. These contain secretory vesicles (synaptic vesicles) that release NTs into the synaptic cleft. These NTs are needed for the transmission of nerve impulses from one neuron to another.

Explanation for incorrect answer:

Option (b) The synaptic knobs possess synaptic vesicles. These vesicles transmit the NTs into the subsequent neuron and not back to the synaptic knob. Hence, this is an incorrect option.

Option (c) They conduct graded potentials (action potentials) to the next neuron. Hence, this is an incorrect option.

Option (d) They are located in the axon terminals of a neuron. They conduct nerve impulses to the dendrites of the next one. Hence, this is an incorrect option.

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Students have asked these similar questions
The cell body of a neuron does all of the following except a. release neurotransmitter into the synaptic cleft. b. produce synaptic vesicles containing neurotransmitter that are subsequently transported to the synaptic knob. c. conduct graded potentials to the initial segment. d. receive graded potentials from dendrites.
After an action potential is fired, the neuron returns to its resting state with the help of... 1. The synapse 2. Neurotransmitters 3. Reuptake 4. the sodium potassium pump
Which of the following would occur if a neuron was experimentally stimulated simultaneously at both ends? The action potentials would pass in the middle and travel to the opposite ends The action potentials would stop as they meet in the middle. The stronger action potential would override the weaker action potential. Summation would occur when the action potentials meet in the middle, resulting in a larger action potential.

Chapter 12 Solutions

A&P CONNECT ACCESS CARD - SP

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