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 B
Explanation
A. Bowman's capsule is the site of initial filtration in the kidney, where blood plasma is filtered into the nephron. However, it does not participate in the reabsorption of water.
B. The proximal convoluted tubules are where the majority of water, along with glucose, amino acids, and ions, is reabsorbed. This segment is crucial for maintaining fluid balance in the body.
C. The renal pelvis is a funnel-like structure that collects urine from the collecting ducts and channels it into the ureter for excretion. It does not play a role in reabsorption.
D. The ascending loop of Henle is primarily involved in the reabsorption of salts (sodium and chloride), but not water, as it is impermeable to water. Water reabsorption occurs in other parts of the nephron, such as the proximal convoluted tubule and the descending loop of Henle.
Correct Answer is A
Explanation
A. Dense regular connective tissue consists of fibroblasts arranged tightly between parallel arrays of collagen fibers. This structure provides tensile strength in one direction, which is found in tendons and ligaments.
B. Dense irregular connective tissue also contains collagen fibers, but these fibers are arranged in an irregular, non-parallel pattern, allowing the tissue to withstand tension from multiple directions, such as in the dermis of the skin.
C. Elastic connective tissue contains a higher proportion of elastin fibers, which provide stretch and recoil. It is found in structures like the walls of large arteries, but not in parallel arrays of collagen fibers.
D. Reticular connective tissue consists of a network of thin, branching collagen fibers, providing structural support in organs like the spleen and lymph nodes, but it does not have tightly packed fibroblasts between parallel collagen fibers.
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