Question 1

Which structure of a multipolar neuron is primarily responsible for receiving incoming signals from other neurons?

Accepted Answer

Dendrite

Question 2

What is the main function of the myelin sheath in a neuron?

Accepted Answer

To increase the speed of nerve impulse transmission

Question 3

A patient has damage to the Schwann cells in their peripheral nervous system. Which of the following is most likely to be affected?

Accepted Answer

Formation of the myelin sheath

Question 4

Which of the following best describes the function of the axon hillock?

Accepted Answer

It is the region where action potentials are initiated.

Question 5

During synaptic transmission, which of the following events occurs first?

Accepted Answer

An action potential arrives at the axon terminal.

Question 6

Which type of neuron is most commonly found as a motor neuron in the human body?

Accepted Answer

Multipolar neuron

Question 7

A researcher is studying the transmission of nerve impulses in a neuron. She notes that the signal jumps from one exposed region of the axon to the next. What are these exposed regions called?

Accepted Answer

Nodes of Ranvier

Question 8

Which of the following best describes the direction of signal transmission in a typical neuron?

Accepted Answer

From dendrite to cell body to axon to axon terminal

Question 9

Which of the following is NOT a function of the cell body (soma) of a neuron?

Accepted Answer

Releasing neurotransmitters

Question 10

A patient is diagnosed with a disorder that impairs the release of neurotransmitters at the synapse. Which part of the neuron is most directly affected?

Accepted Answer

Axon terminal

Question 11

Which of the following statements about unipolar neurons is correct?

Accepted Answer

Their cell body lies off to one side of a continuous dendrite and axon.

Question 12

If the myelin sheath is damaged, which of the following is most likely to occur?

Accepted Answer

The speed of nerve impulse transmission will decrease.

Question 13

Which of the following best describes the role of neurotransmitters in neural communication?

Accepted Answer

They are released into the synaptic cleft to transmit signals to the next cell.

Question 14

A neuron is observed to have one dendrite and one axon with the cell body between them. This neuron is most likely involved in:

Accepted Answer

Special senses

Question 15

Which of the following equations best represents the relationship between the speed of nerve impulse conduction ($$v) $$and the presence of myelin ($$m$$), where $$m = 1 if $$myelin is present and $$m = 0 if $$absent, and $$k is a $$constant?

Accepted Answer

$$v = k 	imes m$$

Question 16

A signal is traveling along a neuron and must cross the synaptic cleft to reach the next neuron. Which of the following best describes what happens at the synapse?

Accepted Answer

Neurotransmitters are released from the pre-synaptic neuron and bind to receptors on the post-synaptic neuron.

Question 17

Which of the following is a correct sequence of events for signal transmission in a neuron?

Accepted Answer

Dendrite → Cell body → Axon hillock → Axon → Axon terminal

Question 18

Which of the following best explains why multiple sclerosis, a disease that damages myelin, leads to muscle weakness and loss of coordination?

Accepted Answer

Myelin damage slows or blocks the transmission of action potentials along axons.

Question 19

Which of the following is true regarding the function of Schwann cells?

Accepted Answer

They form the myelin sheath around axons in the peripheral nervous system.

Question 20

A scientist is studying a neuron that has its cell body located off to one side, with a continuous process that includes both dendrites and axon. This neuron is most likely:

Accepted Answer

A unipolar neuron

Anatomy and Function of Neurons: Study Guide for ANP College Students

Study Guide - Practice Questions

Study Guide - Flashcards