Question 1

Which part of the neuron is primarily responsible for receiving incoming signals from other neurons?

Accepted Answer

Dendrite

Question 2

The electrical response of a neuron, known as the action potential, is initiated when the membrane potential reaches a certain threshold. Which equation best represents the change in membrane potential during an action potential?

Accepted Answer

$$\Delta V = V_{final} - V_{rest}$$

Question 3

Neurotransmitters are released into the synaptic cleft and bind to receptors on the postsynaptic neuron. Which of the following best describes this process?

Accepted Answer

Neurotransmitters diffuse across the synaptic cleft and trigger an electrical response in the postsynaptic neuron.

Question 4

Which process best explains how the brain changes as a result of development, learning, and injury?

Accepted Answer

Neuroplasticity

Question 5

The central nervous system is composed of which two main parts?

Accepted Answer

Brain and spinal cord

Question 6

In a stressful situation, which division of the autonomic nervous system is most active?

Accepted Answer

Sympathetic

Question 7

Which hormone is most commonly associated with the 'fight or flight' response?

Accepted Answer

Adrenaline (epinephrine)

Question 8

A researcher uses functional MRI (fMRI) to study which aspect of brain function?

Accepted Answer

Blood flow changes related to neural activity

Question 9

Which technique is best for recording the electrical activity of the brain in real time?

Accepted Answer

Electroencephalography (EEG)

Question 10

A patient has difficulty speaking after a stroke affecting Broca's area. This is an example of which concept?

Accepted Answer

Localization of function

Question 11

Which of the following best describes heritability?

Accepted Answer

The proportion of variation in a trait attributable to genetic factors within a population

Question 12

Which statement is a common misconception about heritability?

Accepted Answer

High heritability means a trait is unaffected by environment

Question 13

A person touches a hot stove and immediately withdraws their hand. Which part of the nervous system is primarily responsible for this reflex?

Accepted Answer

Spinal cord

Question 14

Which neurotransmitter is most closely associated with mood regulation and is often targeted by antidepressant medications?

Accepted Answer

Serotonin

Question 15

If a neuron is unable to fire another action potential immediately after one has occurred, it is in which phase?

Accepted Answer

Refractory period

Question 16

Which equation best represents the calculation of heritability ($$h^2) in $$twin studies?

Accepted Answer

$$h^2 = 2(r$$_{MZ} - r_{DZ})$$

Question 17

Which scenario best illustrates the role of the somatic nervous system?

Accepted Answer

Voluntarily raising your hand in class

Question 18

Which of the following is NOT a function of glial cells in the nervous system?

Accepted Answer

Transmitting electrical impulses

Question 19

A psychologist is studying the effects of testosterone on aggression. Which type of hormone is testosterone?

Accepted Answer

Steroid hormone

Question 20

Which brain imaging technique is most suitable for identifying structural abnormalities such as tumors?

Accepted Answer

Magnetic resonance imaging (MRI)

Biological Psychology and the Nervous System: Study Guide

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