ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 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 2 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 3 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.
Question 4 of 5
A stimulus will begin an action potential by
Correct Answer: A
Rationale: A stimulus depolarizes the membrane by opening sodium (Na+) channels, allowing Na+ influx to trigger an action potential.
Question 5 of 5
Identify the layers of the meninges in order from deepest to most superficial.
Correct Answer: B
Rationale: Meninges order is pia mater (deepest), arachnoid mater, dura mater (superficial). Option B is correct: dura, arachnoid, pia is reversed.