BAPSY Bachelor of Arts in Psychology Biological Bases of Behavior Questions and Answers Flashcards
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Read the first 6 BAPSY Bachelor of Arts in Psychology Biological Bases of Behavior Questions and Answers flashcards as text
Which neurotransmitter is most directly involved in the regulation of mood, sleep, and appetite?
Answer: Serotonin
Serotonin plays a key role in regulating mood, sleep cycles, and appetite, and its dysregulation is linked to depression.
What is the primary function of the myelin sheath surrounding an axon?
Answer: To speed up the transmission of neural impulses
The myelin sheath insulates the axon and enables saltatory conduction, which greatly increases the speed of nerve impulse transmission.
A patient with damage to Wernicke's area would most likely exhibit which symptom?
Answer: Difficulty comprehending spoken language
Wernicke's area in the left temporal lobe is responsible for language comprehension, so damage leads to receptive aphasia.
Which division of the autonomic nervous system is responsible for the 'rest and digest' response?
Answer: Parasympathetic nervous system
The parasympathetic division calms the body after stress by slowing heart rate, increasing digestion, and conserving energy.
During an action potential, what happens during the depolarization phase?
Answer: Sodium ions rush into the neuron, making the interior more positive
Depolarization occurs when voltage-gated sodium channels open, allowing Na+ to flow inward and reversing the membrane's charge.
Which brain structure serves as the primary relay station for sensory information heading to the cerebral cortex?
Answer: Thalamus
The thalamus routes nearly all incoming sensory information (except smell) to the appropriate cortical areas for processing.