ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
The optic (II) nerve emerges from the brain; therefore, it is a type of
Correct Answer: C
Rationale: The optic nerve (CN II) emerges from the brain, making it a cranial nerve, transmitting visual information. Spinal nerves exit the spinal cord, somatic is a functional term, and enteric is digestive.
Question 2 of 5
Identify the neural cell or part of a neuron that cannot conduct impulses.
Correct Answer: D
Rationale: Neuroglia support neurons but cannot conduct impulses. Axon, cell body, and dendrites participate in signal conduction.
Question 3 of 5
What gives gray matter its grayish color?
Correct Answer: C
Rationale: Gray matter’s grayish color comes from neuronal cell bodies and unmyelinated axons/dendrites, lacking myelin’s white sheen. Myelinated axons are white matter.
Question 4 of 5
All of the following statements are true concerning the middle meningeal artery, EXCEPT
Correct Answer: A
Rationale: The middle meningeal artery enters the cranial cavity through the foramen spinosum, not the foramen ovale (which transmits CN V3). It supplies the dura mater (not pia/arachnoid), grooves the skull’s inner table (e.g., squamous temporal bone), and its rupture causes extradural hematoma, making A the false statement.
Question 5 of 5
Chemical messengers that allow neurons to communicate with other cells are called:
Correct Answer: C
Rationale: Neurotransmitters (e.g., acetylcholine) are chemicals released at synapses for communication. Axons conduct, myelin insulates, and neuroglia support.