ATI RN
Nervous System Questions Questions
Question 1 of 5
In case of peripheral nerve injury, Schwann cells play a role in:
Correct Answer: C
Rationale: Schwann cells promote axon regeneration by clearing debris and forming growth paths. They don’t inhibit or trigger apoptosis.
Question 2 of 5
The reuptake of neurotransmitters back into the presynaptic neuron is facilitated by:
Correct Answer: C
Rationale: Reuptake transporters (e.g., SERT) recycle neurotransmitters into the presynaptic neuron. Vesicles store, junctions conduct, receptors bind.
Question 3 of 5
Cerebrospinal fluid (CSF) is produced by the choroid plexuses and circulates through the ventricles and the subarachnoid space, providing:
Correct Answer: A
Rationale: CSF cushions and supports the brain. Oxygen is via blood, signals are neuronal, taste is unrelated.
Question 4 of 5
The outer layer of the cerebrum, responsible for higher mental functions and composed of gray matter, is called the:
Correct Answer: A
Rationale: The cerebral cortex (gray matter) manages higher functions. Medulla is inner white matter, nucleus is cell cluster.
Question 5 of 5
The basal ganglia are a group of nuclei involved in the regulation of:
Correct Answer: B
Rationale: Basal ganglia (e.g., caudate) regulate voluntary motor control. Heart rate is brainstem, senses are cortical.