Sensory supply of tongue is by all except?
**Core Concept**
The sensory supply of the tongue is primarily provided by the trigeminal nerve (cranial nerve V) and the glossopharyngeal nerve (cranial nerve IX). The trigeminal nerve is responsible for the sensation of the anterior two-thirds of the tongue, while the glossopharyngeal nerve supplies the posterior one-third. The vagus nerve (cranial nerve X) also contributes to the sensory innervation of the epiglottis and the adjacent part of the tongue.
**Why the Correct Answer is Right**
The correct answer is related to the specific distribution of the sensory nerves to the tongue. The trigeminal nerve (cranial nerve V) carries the sensory fibers for the anterior two-thirds of the tongue through the lingual nerve, a branch of the mandibular division of the trigeminal nerve. The glossopharyngeal nerve (cranial nerve IX) supplies the posterior one-third of the tongue through its branch, the tympanic nerve, and the pharyngeal branch. The vagus nerve (cranial nerve X) primarily supplies the epiglottis and the adjacent part of the tongue.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a correct answer. To provide a correct explanation, we need to know what Option A is.
**Option B:** This option is incorrect because it is not a correct answer. To provide a correct explanation, we need to know what Option B is.
**Option C:** This option is incorrect because it is not a correct answer. To provide a correct explanation, we need to know what Option C is.
**Option D:** This option is incorrect because it is not a correct answer. To provide a correct explanation, we need to know what Option D is.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the sensory innervation of the tongue is divided into two distinct areas: the anterior two-thirds, which is supplied by the trigeminal nerve, and the posterior one-third, which is supplied by the glossopharyngeal nerve. This knowledge is crucial for diagnosing and managing various conditions affecting the tongue.
**Correct Answer:** D.