ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
Which of the following is a branch of the mandibular nerve
Correct Answer: D
Rationale: The auriculotemporal nerve is a mandibular (V3) branch, supplying the scalp and TMJ. Infraorbital (V2), external nasal (V1), and zygomaticofacial (V2) are not V3.
Question 2 of 5
Regarding the circle of Willis
Correct Answer: D
Rationale: The internal carotid artery gives off the ophthalmic artery before forming the circle of Willis.
Question 3 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 4 of 5
A neurotransmitter liberated by many peripheral nervous system neurons and some central nervous system neurons. It is excitatory at neuromuscular junctions but inhibitory at some other synapses.
Correct Answer: C
Rationale: Acetylcholine (ACh) is a neurotransmitter used by PNS motor neurons (excitatory at neuromuscular junctions) and some CNS neurons (can be inhibitory, e.g., in the heart). Neurotransmitter receptors receive signals, satellite cells support PNS neurons, and epinephrine is a hormone.
Question 5 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.