ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
The corticospinal tract is an example of a:
Correct Answer: A
Rationale: The corticospinal tract is a projection tract, sending motor signals from cortex to spinal cord.
Question 2 of 5
The hypothalamus plays a crucial role in:
Correct Answer: A
Rationale: The hypothalamus regulates homeostasis (temperature, hunger, thirst).
Question 3 of 5
The dorsal roots of spinal nerves contain:
Correct Answer: A
Rationale: Dorsal roots carry sensory (afferent) fibers only.
Question 4 of 5
Which of the following is a regulatory protein in the cytoplasm that helps the processes at the synapse?
Correct Answer: A
Rationale: Calmodulin binds calcium to regulate synaptic processes (e.g., neurotransmitter release). Protein kinase phosphorylates, ligands bind receptors, and 'gap protein' is vague (likely gap junctions, unrelated).
Question 5 of 5
Excessive polarization due to GABA is created due to the opening of channels.
Correct Answer: B
Rationale: GABA opens Cl- channels, causing hyperpolarization (inhibition) by Cl- influx. Ca++, K+, and Na+ are involved in other processes.