ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
Which cranial nerve controls muscles for chewing and carries sensory input from the face?
Correct Answer: B
Rationale: The trigeminal nerve (CN V) has motor (chewing, e.g., masseter) and sensory (face) roles. Facial is expression, trochlear is eye, hypoglossal is tongue.
Question 2 of 5
Which part of the neuron conducts nerve impulses?
Correct Answer: A
Rationale: The axon conducts nerve impulses away from the cell body. Dendrites receive, synapses connect, and the nucleus controls cell function.
Question 3 of 5
Axons that conduct nerve impulses away from the central nervous system are called:
Correct Answer: B
Rationale: Efferent axons (motor) carry impulses from CNS to effectors. Afferent axons (sensory) go to CNS, interneurons connect within, and 'relay' is a subtype.
Question 4 of 5
Bipolar neurons are commonly found in the:
Correct Answer: B
Rationale: Bipolar neurons, with one dendrite and one axon, are in sensory organs like the retina. Spinal cord has multipolar, muscles/skin lack neurons.
Question 5 of 5
What is the function of the myelin sheath in nerve fibers?
Correct Answer: C
Rationale: Myelin facilitates conduction by enabling saltatory conduction, not preventing it. Resistance decreases, and neurotransmitter release is synaptic.