ATI RN
Nervous System Questions Questions
Question 1 of 5
The cervical sympathetic trunk
Correct Answer: C
Rationale: The cervical sympathetic trunk lies behind the carotid sheath, ascending along the neck to the superior cervical ganglion.
Question 2 of 5
The ophthalmic division of the trigeminal nerve
Correct Answer: D
Rationale: The ophthalmic division (V1) gives branches like lacrimal and supraorbital, some with sympathetic fibers, entering via the superior orbital fissure.
Question 3 of 5
Neurons come in which different type(s)?
Correct Answer: D
Rationale: Neurons are classified as sensory (afferent, transmitting sensory input to the CNS) and motor (efferent, transmitting signals to muscles/glands). 'Skeletal' is not a neuron type; thus, 'A and B' (sensory and motor) is correct.
Question 4 of 5
Which of the following is a genetic disease that causes neurons in the brain to waste away and die?
Correct Answer: D
Rationale: Huntington disease is a genetic disorder (CAG repeat mutation) causing progressive degeneration of neurons, especially in the basal ganglia and cortex. MS is autoimmune, polio is viral, and encephalitis is inflammatory, not genetic.
Question 5 of 5
Membrane-enclosed sac in a synaptic end bulb that stores neurotransmitters.
Correct Answer: B
Rationale: Synaptic vesicles are sacs in the synaptic end bulb that store neurotransmitters for release. Effectors are target cells, effector cell is vague, and axoplasm is axon cytoplasm.