Question 1

Which division of the nervous system is primarily responsible for controlling voluntary muscle movements?

Accepted Answer

Somatic motor division of the peripheral nervous system

Question 2

A patient suffers damage to the network of neurons in the walls of the digestive tract. Which division of the nervous system is most directly affected?

Accepted Answer

Enteric nervous system

Question 3

Which of the following best describes the function of sensory (afferent) neurons?

Accepted Answer

Carry information from sensory receptors toward the CNS

Question 4

Which term is synonymous with 'axon terminal' according to Table 8.1?

Accepted Answer

Synaptic knob

Question 5

A neuron with multiple dendrites and a single axon is classified as which type?

Accepted Answer

Multipolar neuron

Question 6

Which glial cell type is responsible for forming myelin sheaths in the peripheral nervous system?

Accepted Answer

Schwann cells

Question 7

What is the primary function of astrocytes in the central nervous system?

Accepted Answer

Provide multiple support roles including maintaining the blood-brain barrier

Question 8

Which process describes the movement of organelles from the cell body to the axon terminal at rates up to 400 mm/day?

Accepted Answer

Anterograde fast axonal transport

Question 9

If a neuron’s axon is severed but the cell body remains intact, what is most likely to occur in the peripheral nervous system?

Accepted Answer

The axon degenerates and regeneration may occur

Question 10

Which equation predicts the membrane potential that a single ion would produce if the membrane were permeable only to that ion?

Accepted Answer

Nernst equation: $E_x = \frac{61}{z} \log \left( \frac{[X]_{out}}{[X]_{in}} \right)$

Question 11

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

Accepted Answer

Transmitting electrical signals over long distances

Question 12

Which type of neuron is most likely to be found in the retina, based on its structure?

Accepted Answer

Bipolar neuron

Question 13

During fast axonal transport, which organelle is primarily responsible for packaging proteins into vesicles for transport?

Accepted Answer

Golgi apparatus

Question 14

Which of the following best explains why very few ions need to move across the membrane to create large changes in membrane potential?

Accepted Answer

The membrane potential is sensitive to small changes in ion distribution

Question 15

Which branch of the autonomic nervous system is responsible for 'rest and digest' activities?

Accepted Answer

Parasympathetic branch

Question 16

A scientist is studying the effects of a toxin that blocks neurotransmitter release at axon terminals. Which part of the neuron is directly affected?

Accepted Answer

Axon terminal (synaptic knob)

Question 17

Which of the following is a correct sequence for the direction of information flow in a typical multipolar neuron?

Accepted Answer

Dendrite → cell body → axon → axon terminal

Question 18

Which glial cell type is a source of neural stem cells in the CNS?

Accepted Answer

Ependymal cells

Question 19

Which of the following best describes the role of growth cones and neurotrophic factors during neural development?

Accepted Answer

They allow developing neurons to find their target cells

Question 20

Which of the following statements about the enteric nervous system is TRUE?

Accepted Answer

It is a network of neurons in the walls of the digestive tract and can function autonomously

Organization and Cellular Structure of the Nervous System

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