BIOL 2457 EXAM 4 QUESTIONS WITH CORRECT ANSWERS

BIOL 2457 EXAM 4 QUESTIONS WITH
CORRECT ANSWERS 2026/2027

Q: This area of the cerebral cortex is the most important when it comes to higher cognitive
functions (such as organizing thoughts and problem solving). - CORRECT ANSWER -A: Prefrontal
cortex



T or F: Temporal summation occurs when all of the messages are coming from one presynaptic
neuron. - CORRECT ANSWER -T



Q:What is a function of ependymal cells? - CORRECT ANSWER -a:Assist in the synthesis and
movement cerebrospinal fluid.



Q:Put the meninges in order from outermost to innermost. - CORRECT ANSWER -a:dura mater,
arachnoid mater, pia mater



Q:An injury to the occipital lobe of the cerebrum will most likely affect
- CORRECT ANSWER -a:Vision



Q:Match the white matter tracts of the brain with their functions. - CORRECT ANSWER -A:
Association tracts —-- connect areas in the same cerebral hemisphere Projection tracts —--------
- send information out of the brain Commissural tracts — connect areas in opposite cerebral
hemispheres



Q: Absorption of this ion is necessesary for the presynaptic cells to release a neurotransmitter. -
CORRECT ANSWER -A: Calcium



Q: Which kind of neuron carries information towards the central nervous system (CNS)? -
CORRECT ANSWER -A: Sensory neurons.

, Q: Which one of these areas of the brain regulates fear and rage responses? - CORRECT ANSWER -
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A: Amygdala
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Q: Which one is not a function of the cerebrospinal fluid (CSF)? - CORRECT ANSWER -
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A: Insulated neurons for more efficient conduction of electrical signals
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Q: Which of the listed is a function of basal nuclei in the brain? - CORRECT ANSWER -
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A:Suppressing unwanted movements.
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Q: Which one of these structures divides your brain into left and right hemispheres ? -
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CORRECT ANSWER -A: The longitudinal fissure
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Q: Which of the following best describes how an action potential is triggered. - CORRECT
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ANSWER - X2




A: Summation of graded potentials depolarizes the postsynaptic neuron reaching the threshold of v
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oltage at which an action potential will be produced.
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Q: Which of the following is not a mechanism for removing the excess of a neurotransmitter in a syn
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apse? - CORRECT ANSWER -
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A:Some neurotransmitters can be inactivated by binding to each other.
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Q: Which two parts of a neuron are on opposite ends of it? - CORRECT ANSWER -
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A: Dendrites and axon terminals.
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Q: The sensory homunculus is: - CORRECT ANSWER -
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A: a map of where the sensory information from the different parts of your body is sent to in the br
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ain.



Q: How many different lobes make up the cerebrum - CORRECT ANSWER -A: 5
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