Question 1

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

Accepted Answer

It carries action potentials from sensory receptors to the CNS.

Question 2

A patient suffers damage to the myelin sheath in the CNS. Which type of neuroglial cell is most likely affected?

Accepted Answer

Oligodendrocyte

Question 3

Which equation correctly represents the resting membrane potential (RMP) of a neuron?

Accepted Answer

$\mathrm{RMP} = -70\ \mathrm{mV}$

Question 4

Which of the following is TRUE regarding the action potential of a neuron?

Accepted Answer

Action potentials exhibit an all-or-none response.

Question 5

A patient has difficulty with voluntary movement and personality changes. Which brain region is most likely affected?

Accepted Answer

Frontal lobe of the cerebrum

Question 6

Which of the following correctly matches the neuron type with its function?

Accepted Answer

Pseudounipolar neurons: carry sensory action potentials from the PNS to the CNS

Question 7

Which of the following best describes the role of astrocytes in the CNS?

Accepted Answer

They stimulate the growth of neurons and influence synaptic transmission.

Question 8

During the depolarization phase of an action potential, which ions move and in which direction?

Accepted Answer

$\mathrm{Na^+}$ flows into the neuron

Question 9

Which of the following structures is responsible for connecting the left and right cerebral hemispheres?

Accepted Answer

Corpus callosum

Question 10

A patient presents with loss of sensation in the skin and inability to feel pain. Which functional division of the peripheral nervous system is most likely impaired?

Accepted Answer

Sensory division

Question 11

Which of the following is a correct sequence of events during repolarization of a neuron?

Accepted Answer

$\mathrm{K^+}$ channels open, $\mathrm{K^+}$ flows out, membrane potential returns to $-70\ \mathrm{mV}$

Question 12

Which of the following is NOT a function of the nervous system?

Accepted Answer

Production of red blood cells

Question 13

Which meningeal layer is the tough, fibrous outermost layer that protects the brain and spinal cord?

Accepted Answer

Dura mater

Question 14

A patient has a subdural hematoma. Which anatomical space is affected?

Accepted Answer

Between the dura mater and the arachnoid mater

Question 15

Which of the following best describes the function of microglial cells?

Accepted Answer

They keep the tissues clean by engulfing and digesting cellular debris and pathogens.

Question 16

Which equation best represents the movement of ions during the resting membrane potential?

Accepted Answer

$\mathrm{Na^+}$ and $\mathrm{Cl^-}$ high in ECF, $\mathrm{K^+}$ high in cytosol

Question 17

Which of the following is TRUE about the autonomic division of the peripheral nervous system?

Accepted Answer

It is involved in involuntary control of cardiac muscle, smooth muscle, and glands.

Question 18

Which of the following is a function of the association areas in the cerebrum?

Accepted Answer

Integration of sensations, memory, will, and coordination of motor responses

Question 19

A patient has a lesion in the occipital lobe. Which sensory function is most likely impaired?

Accepted Answer

Vision

Study Notes: The Nervous System (Anatomy & Physiology)

Study Guide - Practice Questions

Study Guide - Flashcards