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Taste in the 1/3 posterior of your tongue is given by:

A.

CNV

B.

CNX

C.

CNIX

D.

CN VII

Answer and Explanation

The Correct Answer is C

A.    The trigeminal nerve (CN V) is primarily responsible for sensory information from the face and motor control of the muscles of mastication (chewing). It does not carry taste sensations. Instead, it is involved in sensation (e.g., touch, pain, temperature) of the face and mouth, but not taste.
B.    The vagus nerve (CN X) has various functions, including parasympathetic control of the heart, lungs, and digestive tract, and sensory and motor functions in the throat and voice box. It does contribute to taste sensation in the region of the pharynx and the epiglottis, but it is not primarily responsible for the taste sensation on the posterior third of the tongue.
C.    The glossopharyngeal nerve (CN IX) is responsible for taste sensation on the posterior one-third of the tongue. It also contributes to the sensory innervation of the pharynx and helps in the regulation of saliva production. This nerve is specifically involved in the taste perception in the back third of the tongue.
D.    The facial nerve (CN VII) provides taste sensation to the anterior two-thirds of the tongue. It also controls the muscles of facial expression and contributes to the production of saliva and tears. The facial nerve does not provide taste sensation to the posterior third of the tongue.
 


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Related Questions

Correct Answer is ["C","D","E"]

Explanation

A. Swallowing involves the muscles of the throat and esophagus rather than the TMJ.
B. Extending the tongue involves the muscles of the tongue and mouth, which are not directly related to the TMJ.
C. Rocking the jaw laterally (side to side) is a specific movement that involves the TMJ. This movement tests the ability of the TMJ to move the jaw from side to side.
D. Opening and closing the mouth involves the primary hinge movement of the TMJ. This movement assesses the vertical range of motion of the jaw.
E. Jutting the jaw forward (protrusion) involves moving the lower jaw forward in relation to the upper jaw. This movement tests the ability of the TMJ to perform anterior movement.

Correct Answer is A

Explanation

A. This maneuver is intended to engage other muscle groups and increase overall muscle tone. It can help facilitate the patellar reflex by increasing muscle tension and sensitivity. This technique can enhance the reflex response by engaging the client in a physical action that might make the reflex more pronounced.
B. Squeezing the thigh might create discomfort or involuntary muscle contraction, which could interfere with the reflex response. It is not a recommended technique for eliciting the patellar reflex and may not have a significant effect on reflex assessment.
C. Stretching the arms over the head does not directly influence the patellar reflex. Reflexes are typically assessed in a relaxed state, and this action might not be relevant for improving the patellar reflex response.
D. Clenching the jaw might increase overall muscle tone temporarily, but it does not directly impact the patellar reflex. This technique is less likely to influence the patellar reflex compared to techniques that engage lower body muscle groups.

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