BAPSY BAPSY Bachelor of Arts in Psychology Biological Bases of Behavior Questions and Answers 2

Question 1

Which neurotransmitter is most directly involved in the regulation of mood, sleep, and appetite?

Accepted Answer

Serotonin

Answer

Serotonin plays a key role in regulating mood, sleep cycles, and appetite, and its dysregulation is linked to depression.

Question 2

What is the primary function of the myelin sheath surrounding an axon?

Accepted Answer

To speed up the transmission of neural impulses

Answer

The myelin sheath insulates the axon and enables saltatory conduction, which greatly increases the speed of nerve impulse transmission.

Question 3

A patient with damage to Wernicke's area would most likely exhibit which symptom?

Accepted Answer

Difficulty comprehending spoken language

Answer

Wernicke's area in the left temporal lobe is responsible for language comprehension, so damage leads to receptive aphasia.

Question 4

Which division of the autonomic nervous system is responsible for the 'rest and digest' response?

Accepted Answer

Parasympathetic nervous system

Answer

The parasympathetic division calms the body after stress by slowing heart rate, increasing digestion, and conserving energy.

Question 5

During an action potential, what happens during the depolarization phase?

Accepted Answer

Sodium ions rush into the neuron, making the interior more positive

Answer

Depolarization occurs when voltage-gated sodium channels open, allowing Na+ to flow inward and reversing the membrane's charge.

BAPSY - Bachelor of Arts in Psychology Practice Test