ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
The hypothalamus is a key component of the endocrine system, controlling the release of hormones from the:
Correct Answer: A
Rationale: The hypothalamus controls the pituitary gland via releasing hormones.
Question 2 of 5
Myasthenia gravis is due to receptors being blocked and destroyed by antibodies.
Correct Answer: C
Rationale: Myasthenia gravis involves antibodies blocking/destroying nicotinic acetylcholine receptors at neuromuscular junctions. Epinephrine is a neurotransmitter, 'transient' is unclear.
Question 3 of 5
Valium has an effect on ___ to inhibit neural transmission.
Correct Answer: C
Rationale: Valium (a benzodiazepine) enhances GABA’s inhibitory effect by increasing Cl- channel opening, reducing neural activity.
Question 4 of 5
Supporting cells located within the CNS are collectively called:
Correct Answer: A
Rationale: Neuroglia (glial cells) support CNS neurons (e.g., astrocytes, oligodendrocytes). Astrocytes are a subtype, perikaryon is the cell body, satellite cells are PNS.
Question 5 of 5
Which of the following manifestations is consistent with a client who sustained a traumatic left parietal lobe injury?
Correct Answer: A
Rationale: Left parietal lobe damage causes Gerstmann’s Syndrome (agraphia, acalculia, agnosia). Memory/vision issues suggest temporal lobe, personality changes suggest frontal lobe, and motor loss suggests frontal/motor cortex damage.