ATI RN
Questions About Nervous System Questions
Question 1 of 5
The white ramus of each spinal nerve has attached to it:
Correct Answer: B
Rationale: The white ramus communicans connects the spinal nerve to the sympathetic chain ganglion, carrying preganglionic fibers. Posterior root ganglia are sensory, prevertebral/celiac are distinct.
Question 2 of 5
A patient scheduled for surgery confides in his nurse the night before that he is 'terribly scared.' Which of the following indicate(s) increased sympathetic activity in this patient:
Correct Answer: D
Rationale: All are sympathetic 'fight-or-flight' signs: dry mouth (reduced salivation), sweating (stress response), pale skin (vasoconstriction), dilated pupils (adrenergic).
Question 3 of 5
A patient with a contusion over the parotid region has the following symptoms: paralysis of facial muscles, one eye can't be shut, corner of the mouth droops. Which cranial nerve is damaged?
Correct Answer: B
Rationale: Facial nerve (VII) damage near the parotid gland causes facial paralysis, inability to close the eye, and drooping mouth.
Question 4 of 5
The neuroglial cells that have functions similar to white blood cells are:
Correct Answer: C
Rationale: Microglia act as the CNS immune cells, phagocytosing debris and pathogens, similar to white blood cells. Oligodendrocytes myelinate, astrocytes support, ependymal cells line ventricles, lymphocytes are immune system cells.
Question 5 of 5
Dendrites carry nerve impulses:
Correct Answer: A
Rationale: Dendrites receive signals and conduct them toward the neuron’s cell body. Axons carry impulses away, synapses transfer between neurons.