Question 1

Which of the following best describes the function of the sympathetic nervous system?

Accepted Answer

It prepares the body for 'fight or flight' responses by increasing heart rate and inhibiting digestion.

Question 2

A person is startled by a loud noise, causing their heart rate to increase and pupils to dilate. Which division of the nervous system is primarily responsible for these changes?

Accepted Answer

Sympathetic nervous system

Question 3

Which of the following statements about neurons is TRUE?

Accepted Answer

Neurons transmit information through electrical impulses called action potentials.

Question 4

Which process best illustrates the concept of 'plasticity' in the brain?

Accepted Answer

The brain's capacity to change and reorganize neural pathways based on experience.

Question 5

A person suffers a stroke that damages the left hemisphere of their brain, resulting in difficulty with speech production. This is an example of which concept?

Accepted Answer

Localization of function

Question 6

Which of the following best describes the role of glial cells in the nervous system?

Accepted Answer

They provide support, nourishment, and protection for neurons.

Question 7

Which of the following is a correct sequence of events during synaptic transmission?

Accepted Answer

Neurotransmitter is released from the presynaptic neuron, crosses the synaptic cleft, and binds to receptors on the postsynaptic neuron.

Question 8

Which of the following best defines an action potential?

Accepted Answer

A brief electrical charge that travels down the axon of a neuron.

Question 9

Which system is primarily responsible for involuntary bodily functions such as heart rate, digestion, and respiratory rate?

Accepted Answer

Autonomic nervous system

Question 10

Which of the following is TRUE about hormones?

Accepted Answer

They are chemical messengers released by endocrine glands into the bloodstream.

Question 11

A runner experiences a 'runner's high' after a long race. Which neurotransmitter-like chemical is most likely responsible for this sensation?

Accepted Answer

Endorphins

Question 12

Which of the following best describes the function of the peripheral nervous system?

Accepted Answer

It connects the central nervous system to the limbs and organs.

Question 13

Which of the following is an example of the somatic nervous system in action?

Accepted Answer

Moving your hand away from a hot stove

Question 14

Stem cells in the nervous system are important because they:

Accepted Answer

Can develop into many different types of specialized cells.

Question 15

Which of the following best illustrates the concept of 'neurons that fire together, wire together'?

Accepted Answer

A person learning to play the piano improves with practice as neural connections strengthen.

Question 16

Which of the following is NOT a function of glial cells?

Accepted Answer

Transmitting electrical impulses

Question 17

Which of the following best describes the role of endocrine glands?

Accepted Answer

They release hormones directly into the bloodstream to regulate bodily functions.

Question 18

A person is able to recover some movement in their hand after a brain injury through therapy and practice. This recovery is best explained by which concept?

Accepted Answer

Plasticity

Question 19

Which of the following equations best represents the all-or-none law of action potentials?

Accepted Answer

$$V_{AP} = \begin{cases} V_{max}, & 	ext{if } V_{threshold} 	ext{ is reached} \ 0, & 	ext{if } V_{threshold} 	ext{ is not reached} \end{cases}$$

Question 20

Which of the following scenarios best demonstrates the function of the parasympathetic nervous system?

Accepted Answer

A person’s body calms down and digestion resumes after a stressful event.

Introduction to Psychology: Nervous System and Brain Function Study Guide

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