ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
Which of the following controls the 'fight-or-flight' response?
Correct Answer: D
Rationale: The autonomic nervous system (specifically sympathetic division) controls the fight-or-flight response, increasing heart rate and alertness. CNS integrates, spinal cord relays, and cranial nerves serve head.
Question 2 of 5
The cerebellum and cerebrum are covered by
Correct Answer: B
Rationale: The cerebellum and cerebrum are covered by gray matter (cortex), containing neuronal cell bodies. White matter is internal, neuroglia are supportive cells, and ganglia are PNS.
Question 3 of 5
The nerve that accompanies the submental artery is the
Correct Answer: B
Rationale: The mylohyoid nerve (a branch of the inferior alveolar nerve from CN V3) accompanies the submental artery, supplying the mylohyoid muscle and anterior digastric. The cervical branch of the facial nerve (CN VII) supplies platysma, the transverse cervical nerve (C2-C3) is cutaneous, and the great auricular nerve (C2-C3) innervates the ear.
Question 4 of 5
A bundle of axons in the peripheral nervous system is a:
Correct Answer: B
Rationale: A nerve is a bundle of axons in the PNS (e.g., sciatic nerve). Tracts are CNS, cell bodies are soma, and neuroglia support.
Question 5 of 5
What mechanism helps keep the neuron membrane at its resting potential?
Correct Answer: B
Rationale: The sodium-potassium pump (active transport) maintains resting potential by pumping 3 Na+ out and 2 K+ in, countering ion leakage.