ATI RN
Questions About Nervous System Questions
Question 1 of 5
The stomach and the small intestine are served by the
Correct Answer: C
Rationale: The enteric nervous system (PNS) autonomously controls stomach and intestine function. CNS integrates, cranial nerves serve head, and somatic neurons control skeletal muscles.
Question 2 of 5
The sensory innervation to the lower part of the medial surface of the auricle is by the
Correct Answer: C
Rationale: The greater auricular nerve (C2-C3, cervical plexus) provides sensory innervation to the lower medial surface of the auricle (ear). The facial nerve (CN VII) is primarily motor, the auriculotemporal nerve (CN V3) supplies the upper lateral auricle, and the lesser occipital nerve (C2) innervates the upper posterior scalp and auricle.
Question 3 of 5
The gaps in between the myelin sheath are called:
Correct Answer: D
Rationale: Nodes of Ranvier are gaps between myelin segments on axons, enabling saltatory conduction. Axon, cell body, and dendrite are neuron parts.
Question 4 of 5
Identify a neuron(s) that have a multipolar structure.
Correct Answer: D
Rationale: Motor neurons and interneurons are typically multipolar (multiple processes). Sensory neurons are usually pseudounipolar.
Question 5 of 5
Which of the following accounts for the movement of neurotransmitters across a synaptic cleft?
Correct Answer: D
Rationale: Neurotransmitters move across the synaptic cleft by diffusion, driven by concentration gradients after release.