Question 1

Which of the following best describes the function of myelin sheaths in the nervous system?

Accepted Answer

They increase the speed of electrical signal transmission along the axon.

Question 2

A patient is unable to form new long-term memories after a brain injury. Which brain structure is most likely damaged?

Accepted Answer

Hippocampus

Question 3

Which neurotransmitter is most closely associated with pleasure, reward, and voluntary movement?

Accepted Answer

Dopamine

Question 4

What is the primary function of the medulla in the hindbrain?

Accepted Answer

Controlling basic life functions such as breathing and heart rate

Question 5

Which of the following best explains the process of reuptake in neurotransmission?

Accepted Answer

Neurotransmitters are taken back into the presynaptic neuron after release.

Question 6

A person with damage to the prefrontal cortex is most likely to experience which of the following symptoms?

Accepted Answer

Impaired judgment and difficulty controlling impulses

Question 7

Which of the following statements about action potentials is correct?

Accepted Answer

An action potential occurs when the neuron depolarizes and sodium ions ($$\mathrm{Na^+}) $$rush into the cell.

Question 8

Which neurotransmitter is primarily inhibitory in the central nervous system and is associated with reducing brain activity?

Accepted Answer

GABA

Question 9

A split-brain patient is shown an object in their left visual field. Which hemisphere processes this information, and what is a likely outcome?

Accepted Answer

Right hemisphere; the patient may not be able to verbally identify the object.

Question 10

Which brain imaging technique is best suited for measuring electrical activity in the brain with high temporal resolution?

Accepted Answer

Electroencephalography (EEG)

Question 11

Which of the following best describes the function of the corpus callosum?

Accepted Answer

It connects the two cerebral hemispheres, allowing communication between them.

Question 12

A drug that blocks the reuptake of serotonin in the brain would most likely:

Accepted Answer

Increase the amount of serotonin available in the synaptic cleft.

Question 13

Which of the following is an example of neural plasticity?

Accepted Answer

Changes in hippocampal structure and function after trauma

Question 14

Which lobe of the cerebral cortex is primarily responsible for processing visual information?

Accepted Answer

Occipital lobe

Question 15

A person is experiencing difficulty with speech comprehension and production. Which area of the brain is most likely affected?

Accepted Answer

Left hemisphere, including Broca's and Wernicke's areas

Question 16

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

Accepted Answer

They support, nourish, and protect neurons.

Question 17

Which neurotransmitter is most closely linked to mood regulation and is targeted by many antidepressant medications?

Accepted Answer

Serotonin

Question 18

A person with damage to the cerebellum would most likely have difficulty with which of the following?

Accepted Answer

Coordinating voluntary muscle movements

Question 19

Which of the following best explains the 'all-or-none' principle of action potentials?

Accepted Answer

A neuron either fires completely or not at all; there is no partial firing.

Question 20

Which of the following is a likely effect of alcohol on neurotransmission?

Accepted Answer

It increases GABA activity and decreases glutamate activity.

Neuroscience Foundations: Brain Structure, Function, and Neurotransmission

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