Psychology Degree Biological Bases of Behavior Questions and Answers Flashcards
6 cards from real Psychology Degree practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
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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 deficiency is linked to depression.
What structure connects the left and right cerebral hemispheres, allowing communication between them?
Answer: Corpus callosum
The corpus callosum is a thick band of nerve fibers that facilitates interhemispheric communication.
Which part of the peripheral nervous system is responsible for the 'rest and digest' response?
Answer: Parasympathetic nervous system
The parasympathetic division conserves energy and promotes calming functions such as digestion and lowered heart rate.
A lesion to Wernicke's area would most likely result in which type of impairment?
Answer: Difficulty comprehending spoken language
Wernicke's area in the left temporal lobe is essential for language comprehension, and damage leads to fluent but nonsensical speech.
Which brain imaging technique measures changes in blood oxygenation to map neural activity in real time?
Answer: fMRI
Functional MRI detects changes in blood oxygen levels (the BOLD signal) to identify active brain regions during tasks.
During an action potential, what event occurs during the depolarization phase?
Answer: Sodium ions rush into the neuron
Depolarization occurs when voltage-gated sodium channels open, allowing Na+ ions to flood into the cell and reverse the membrane charge.