Question 1

Which neural component is primarily responsible for transmitting electrical signals away from the neuron's cell body?

Accepted Answer

Axon

Question 2

A patient with multiple sclerosis experiences erratic neural signaling. Which neural structure is most likely affected?

Accepted Answer

Myelin sheath

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 glial cells in the nervous system?

Accepted Answer

Protect and nourish neurons

Question 5

Which process describes the removal of neurotransmitters from the synaptic cleft by being taken back into the presynaptic neuron?

Accepted Answer

Reuptake

Question 6

A person is given a drug that blocks the reuptake of serotonin. What is the likely effect?

Accepted Answer

Increased serotonin in the synaptic cleft

Question 7

Which equation best represents the movement of sodium ions during the depolarization phase of an action potential?

Accepted Answer

$$Na^+_{out} \rightarrow Na^+_{in}$$

Question 8

Which brain region is most involved in planning, executive functions, and motor control?

Accepted Answer

Frontal lobe

Question 9

Damage to which area of the brain is most likely to result in changes in moral judgment, deficits in guilt, and reduced empathy?

Accepted Answer

Prefrontal cortex

Question 10

Which imaging technique uses radioactive substances to monitor changes in blood flow to different brain regions?

Accepted Answer

Positron emission tomography (PET)

Question 11

A split-brain patient is asked to verbally describe an object seen only in their left visual field. Which hemisphere is unable to process this information for speech?

Accepted Answer

Right hemisphere

Question 12

Which neurotransmitter is most associated with learning and memory, and is inhibited by alcohol?

Accepted Answer

Glutamate

Question 13

Which brain structure is responsible for forming new long-term memories?

Accepted Answer

Hippocampus

Question 14

Which of the following best describes the function of the medulla?

Accepted Answer

Controls basic functions like breathing and heart rate

Question 15

Which equation represents the electrical potential difference across a neuron's membrane at rest?

Accepted Answer

$$V_{rest} = -70\ \mathrm{mV}$$

Question 16

Which of the following is a function of the thalamus?

Accepted Answer

Relays sensory signals to the appropriate areas of the brain

Question 17

A person with damage to Broca's area would most likely experience difficulty with:

Accepted Answer

Producing speech

Question 18

Which of the following best describes the role of agonist drugs in neurotransmission?

Accepted Answer

Mimic or enhance the effect of neurotransmitters

Question 19

Which brain mapping technique involves recording electrical activity of the brain via electrodes on the scalp?

Accepted Answer

Electroencephalography (EEG)

Question 20

Which of the following is most likely to result from damage to the occipital lobe?

Accepted Answer

Face blindness (prosopagnosia)

Neuroscience Foundations: Neurons, Brain Structure, and Brain Mapping

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