ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
Dopamine is an important neurotransmitter. Which disease or disorder results when the neurons in the brain that produce dopamine die?
Correct Answer: C
Rationale: Parkinson disease results from the death of dopamine-producing neurons in the substantia nigra, leading to motor symptoms like tremors. MS affects myelin, ALS affects motor neurons broadly, and seizures are unrelated to dopamine loss.
Question 2 of 5
Neuroglial cell of the PNS that forms a myelin sheath around a portion of an axon and participates in axon regeneration after injury.
Correct Answer: C
Rationale: Schwann cells in the PNS myelinate axons and aid regeneration after injury. Wallerian degeneration is a process, neuroblastoma is a tumor, and axosomatic is a synapse type.
Question 3 of 5
Any stress that changes a controlled condition; any change in the internal or external environment that excites a sensory receptor, a neuron, or a muscle fiber.
Correct Answer: D
Rationale: A stimulus is any change (e.g., light, pressure) that activates sensory receptors, neurons, or muscles. Enteric plexuses are digestive nerves, axoplasm is axon cytoplasm, and synaptic cleft is a synapse gap.
Question 4 of 5
An extension of a neuron that conducts a nerve impulse toward a synapse; may be myelinated or unmyelinated.
Correct Answer: A
Rationale: A nerve fiber (axon) conducts impulses toward a synapse. Myelin sheath insulates, axon is a synonym, and effectors are targets.
Question 5 of 5
A malignant tumor that consists of immature nerve cells (neuroblasts); occurs most commonly in the abdomen and most frequently in the suprarenal glands.
Correct Answer: B
Rationale: Neuroblastoma is a malignant tumor of immature neuroblasts, common in children’s adrenal glands. Axoplasm is axon cytoplasm, action potential is a signal, and axosomatic is a synapse.