ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
What is a common neurotransmitter?
Correct Answer: D
Rationale: Acetylcholine (muscle/nerve communication), GABA (inhibitory), and serotonin (mood regulation) are all common neurotransmitters. 'All of the above' is correct as they are widely recognized examples.
Question 2 of 5
Specialized hypothalamic neuron that secretes a hormone into blood capillaries of the posterior pituitary.
Correct Answer: D
Rationale: Neurosecretory cells in the hypothalamus release hormones (e.g., oxytocin, ADH) into the posterior pituitary’s capillaries. Interneurons connect neurons, neurology is a field, and spinal nerves are PNS.
Question 3 of 5
A space along a myelinated axon between the individual Schwann cells that form the myelin sheath and the neurolemma. Also called a node of Ranvier.
Correct Answer: D
Rationale: Myelin sheath gaps (nodes of Ranvier) are spaces between Schwann cells on myelinated axons, enabling saltatory conduction. Gray matter is cell bodies, cranial nerves are PNS, and neuropathy is a disorder.
Question 4 of 5
A neuroglial cell that supports neurons and produces a myelin sheath around axons of neurons of the central nervous system.
Correct Answer: A
Rationale: Oligodendrocytes in the CNS myelinate axons, supporting signal conduction. ACh is a neurotransmitter, white matter is axons, and action potential is a signal.
Question 5 of 5
The part of the peripheral nervous system that regulates involuntary responses, such as those of cardiac muscle, smooth muscle, and glands.
Correct Answer: A
Rationale: The autonomic nervous system (ANS) regulates involuntary functions (e.g., heart rate, digestion). Nerve action potential is a signal, astrocytes are glia, and enteric is an ANS subdivision.