BIOD322 Neuroscience (Module 1) Latest Final Test Review Q & S 2024
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Course
BIOD322
Institution
BIOD322
BIOD322 Neuroscience (Module 1) Latest Final Test Review Q & S 2024BIOD322 Neuroscience (Module 1) Latest Final Test Review Q & S 2024BIOD322 Neuroscience (Module 1) Latest Final Test Review Q & S 2024
,1. Which structure is responsible for the production of
cerebrospinal fluid (CSF)?
A. Choroid plexus
B. Arachnoid villi
C. Pia mater
D. Dura mater
Correct Answer: A. Choroid plexus
Rationale: The choroid plexus is a network of cells that line the
ventricles of the brain and produce cerebrospinal fluid (CSF).
2. The blood-brain barrier (BBB) is selectively permeable due to
the presence of:
A. Astrocyte end-feet
B. Tight junctions between endothelial cells
C. Pericytes
D. All of the above
Correct Answer: D. All of the above
Rationale: The BBB's selective permeability is due to astrocyte
end-feet that surround capillaries, tight junctions between
endothelial cells that prevent passage of substances, and pericytes
that regulate blood flow.
,3. Which of the following neurotransmitters is primarily
excitatory in the central nervous system?
A. GABA
B. Dopamine
C. Glutamate
D. Serotonin
Correct Answer: C. Glutamate
Rationale: Glutamate is the main excitatory neurotransmitter in
the CNS, playing a key role in neural activation and synaptic
plasticity.
4. The autonomic nervous system does NOT directly control:
A. Heart rate
B. Skeletal muscle contraction
C. Digestive secretion
D. Pupil dilation
Correct Answer: B. Skeletal muscle contraction
Rationale: The autonomic nervous system regulates involuntary
body functions, whereas skeletal muscle contraction is controlled
by the somatic nervous system.
, 5. Which area of the brain is responsible for regulating
homeostasis and endocrine function?
A. Cerebellum
B. Hypothalamus
C. Thalamus
D. Medulla oblongata
Correct Answer: B. Hypothalamus
Rationale: The hypothalamus is a crucial brain region for
maintaining homeostasis and controlling the endocrine system via
the pituitary gland.
6. The resting membrane potential of a neuron is closest to the
equilibrium potential of which ion?
A. Sodium (Na+)
B. Potassium (K+)
C. Calcium (Ca2+)
D. Chloride (Cl-)
Correct Answer: B. Potassium (K+)
Rationale: The resting membrane potential is primarily
determined by the concentration gradient of potassium, which is
why it is closest to potassium's equilibrium potential.
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