ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
The neuron cell is made up of which of the following parts?
Correct Answer: D
Rationale: A neuron consists of an axon (transmits signals), dendrites (receive signals), and a nucleus (within the cell body, or soma, controlling cell function). 'All of the Above' is correct as these are key components.
Question 2 of 5
The surface of the cerebral hemispheres, 2-4 mm thick, consisting of gray matter; arranged in six layers of neuronal cell bodies in most areas.
Correct Answer: D
Rationale: The cerebral cortex is the gray matter surface of the cerebral hemispheres, 2-4 mm thick, with six neuronal layers. Astrocytes are glia, neuropathy is a disorder, and cranial nerves are PNS.
Question 3 of 5
A cluster of neuron cell bodies in the peripheral nervous system.
Correct Answer: B
Rationale: A ganglion is a cluster of neuron cell bodies in the PNS. ACh is a neurotransmitter, synaptic cleft is a gap, and neuropathy is a disorder.
Question 4 of 5
A neuron that propagates nerve impulses toward a synapse.
Correct Answer: B
Rationale: The presynaptic neuron sends nerve impulses toward a synapse, releasing neurotransmitters. Postsynaptic neurons receive signals, enteric plexuses are digestive, and synaptic end bulbs are axon parts.
Question 5 of 5
The peripheral, nucleated cytoplasmic layer of the Schwann cell. Also called sheath of Schwann.
Correct Answer: A
Rationale: The neurolemma (sheath of Schwann) is the outer cytoplasmic layer of Schwann cells, aiding PNS axon regeneration. Axon conducts signals, oligodendrocytes are CNS glia, and depression is unrelated.