Which of the following cranial nerves is affected in an individual who is experiencing pain and tingling of the face?
Trochlear (IV)
Trigeminal (V)
Glossopharyngeal (IX)
Abducens (VI)
The Correct Answer is B
A. The trochlear nerve (IV) controls the superior oblique muscle of the eye and is not responsible for sensation or pain in the face.
B. The trigeminal nerve (V) is responsible for sensation in the face, including pain, tingling, and touch. It also controls the muscles of mastication. A lesion or irritation of this nerve can lead to symptoms like pain and tingling in the face.
C. The glossopharyngeal nerve (IX) primarily controls the sensation in the throat and the taste sensation on the back of the tongue. It is not responsible for facial pain or tingling.
D. The abducens nerve (VI) controls the lateral rectus muscle of the eye, responsible for eye movement, but does not contribute to facial sensation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The renal afferent arteriole does not play a role in reabsorbing glucose. Glucose reabsorption occurs in the proximal convoluted tubule of the nephron, not in the afferent arteriole.
B. The afferent arteriole does not reabsorb potassium and magnesium. These electrolytes are reabsorbed in specific segments of the nephron, such as the proximal convoluted tubule and the loop of Henle.
C. The renal afferent arteriole delivers blood to the nephron, specifically to the glomerulus, where filtration of blood occurs. This is its primary function in the kidney's filtration process.
D. The afferent arteriole does not act as a holding area for filtrate. Filtrate is formed in the glomerulus, and it then moves into the Bowman's capsule and through the nephron.
Correct Answer is B
Explanation
A. Vitamin B12 is not synthesized in the skin. It is primarily absorbed through the digestive system from dietary sources such as meat and dairy products.
B. Vitamin D is synthesized in the skin when exposed to sunlight, specifically ultraviolet B (UVB) radiation, which triggers the production of vitamin D3, a precursor to the active form of vitamin D.
C. Vitamin A is obtained from dietary sources, such as fruits and vegetables, and is not synthesized in the skin.
D. Vitamin K is primarily absorbed from food and produced by bacteria in the intestines, not synthesized in the skin.
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