The nurse is performing a neurologic assessment on a client diagnosed with a stroke and cannot elicit a gag reflex. This deficit is related to which of the following cranial nerves?

Trigeminal nerve.

Facial nerve.

Glossopharyngeal nerve.

Vagus nerve.

Answer and Explanation

Correct Answer : C,D

Choice A rationale

The trigeminal nerve is responsible for facial sensation and motor functions like chewing, not related to gag reflex impairment.

Choice B rationale

The facial nerve controls facial expressions, taste sensations, and other functions but does not influence the gag reflex.

Choice C rationale

The glossopharyngeal nerve (cranial nerve IX) plays a crucial role in the gag reflex as it innervates part of the pharynx and is responsible for sensory functions in the throat.

Choice D rationale

The vagus nerve (cranial nerve X) also contributes to the gag reflex, providing motor innervation to the pharyngeal muscles and aiding in swallowing and speech functions.

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Correct Answer is C

Explanation

Choice A rationale

A pustule is an elevated, round lesion filled with pus, not serum. Pustules are commonly seen in acne or infections.

Choice B rationale

A macule is a flat, discolored area of the skin that is not elevated. Macules do not contain fluid and are often seen in conditions like freckles or flat moles.

Choice C rationale

A vesicle is an elevated, round lesion filled with clear serum. Vesicles can result from conditions such as chickenpox, herpes simplex, or dermatitis.

Choice D rationale

A cyst is an elevated, round lesion filled with semi-solid material or fluid. Cysts are typically deeper in the skin compared to vesicles.

A. It produces cerebral neurotransmitters. B. It acts as a barrier to bacteria. C. It acts as an insulator to maintain a constant spinal fluid temperature. D. It cushions the brain and spinal cord.

Correct Answer is D

Explanation

Choice A rationale

Cerebrospinal fluid (CSF) does not produce cerebral neurotransmitters. Neurotransmitters are produced by neurons in the brain and nervous system.

Choice B rationale

CSF provides a protective barrier to some extent, but its primary function is not to act as a barrier to bacteria. The blood-brain barrier primarily serves this function.

Choice C rationale

CSF helps maintain a stable environment in the central nervous system but is not primarily an insulator for maintaining constant temperature. Its thermal properties are secondary.

Choice D rationale

The primary function of CSF is to cushion and protect the brain and spinal cord from mechanical injury. It also helps maintain the brain's buoyancy and provides a stable environment for the central nervous system.

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The nurse is performing a neurologic assessment on a client diagnosed with a stroke and cannot elicit a gag reflex. This deficit is related to which of the following cranial nerves?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

During the skin assessment of a client, the nurse observes a skin lesion that is elevated, round, and filled with serum. Identify the type of lesion.

Correct Answer is C

Explanation

What is the function of cerebrospinal fluid (CSF)?

Correct Answer is D

Explanation

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