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Questions and Answers
Which portion of the tongue is associated with the glossopharyngeal nerve for taste sensation?
Which portion of the tongue is associated with the glossopharyngeal nerve for taste sensation?
- Posterior 1/3 (correct)
- Anterior 1/3
- Posterior 1/4
- Entire tongue
What is the primary motor function of the stylopharyngeus muscle?
What is the primary motor function of the stylopharyngeus muscle?
- Contract the diaphragm
- Widen the larynx during breathing
- Elevate the uvula during swallowing
- Shorten and widen the pharynx (correct)
What gland receives parasympathetic signals from the glossopharyngeal nerve?
What gland receives parasympathetic signals from the glossopharyngeal nerve?
- Thyroid gland
- Sublingual gland
- Submandibular gland
- Parotid gland (correct)
Which function is NOT associated with the glossopharyngeal nerve?
Which function is NOT associated with the glossopharyngeal nerve?
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During swallowing, what role does the stylopharyngeus muscle play?
During swallowing, what role does the stylopharyngeus muscle play?
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Study Notes
Functions of Cranial Nerve IX (Glossopharyngeal Nerve)
-
Special Sensory Function
- Responsible for taste sensation in the posterior one-third of the tongue.
-
Motor Functions
- Innervates the stylopharyngeus muscle.
- Functions include shortening and widening the pharynx, as well as elevating the larynx during the process of swallowing.
-
Parasympathetic Functions
- Sends signals to the parotid gland, playing a role in saliva production.
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