Nerve endings in the tongue are specialized sensory receptors that play a crucial role in taste perception and the sensation of texture, temperature, and pain. These endings include taste buds, which contain taste receptor cells that respond to different taste modalities: sweet, sour, salty, bitter, and umami. Additionally, other nerve endings detect tactile sensations and temperature, contributing to the overall experience of eating and drinking. The rich innervation of the tongue helps facilitate communication between the oral cavity and the nervous system.
The cranial nerve pair being tested by asking the patient to stick out their tongue is the hypoglossal nerve (CN XII). Dysfunction of this nerve can result in a deviation of the tongue towards the affected side, weakness or atrophy of the tongue muscles, and difficulty with speech and swallowing.
The tongue connects to the brain through a network of nerves, primarily the hypoglossal nerve (cranial nerve XII), which controls its movement. Additionally, sensory information from the tongue, including taste, is transmitted to the brain via the facial nerve (cranial nerve VII) for the front two-thirds of the tongue and the glossopharyngeal nerve (cranial nerve IX) for the back third. These pathways enable the brain to process taste, texture, and temperature, allowing for coordinated movements and sensory experiences.
The "Lingual Nerve"The lingual nerve is a branch of the mandibular nerve (CN V3), itself a branch of the trigeminal nerve, which supplies sensory innervation to the tongue. It also carries fibers from the facial nerve, which return taste information from the anterior two thirds of the tongue.Source:- http://en.wikipedia.org/wiki/Lingual_nerve
Where you get pain
the Chorda Tympani nerve ( a branch of the facial nerve VII) which joins the lingual nerve medial to the lateral pterygoid muscle.
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glossopharyngeal nerve (IX)
The tip of the tongue is supplied by the lingual nerve, a branch of the mandibular division of the trigeminal nerve (CN V3). It provides sensory innervation to the anterior two-thirds of the tongue, including the tip.
The cranial nerve pair being tested by asking the patient to stick out their tongue is the hypoglossal nerve (CN XII). Dysfunction of this nerve can result in a deviation of the tongue towards the affected side, weakness or atrophy of the tongue muscles, and difficulty with speech and swallowing.
hypoglossal nerve
it will hurt
it is the nerve ending
in the olfactory nerve
The chorda tympani nerve, a branch of the facial nerve, serves the anterior two-thirds of the tongue for taste sensation.
The tongue connects to the brain through a network of nerves, primarily the hypoglossal nerve (cranial nerve XII), which controls its movement. Additionally, sensory information from the tongue, including taste, is transmitted to the brain via the facial nerve (cranial nerve VII) for the front two-thirds of the tongue and the glossopharyngeal nerve (cranial nerve IX) for the back third. These pathways enable the brain to process taste, texture, and temperature, allowing for coordinated movements and sensory experiences.
Tongue
Finger tip has numerous nerve endings and that's why they are too sensitive. Similar is the case with tongue which has numerous nerves in order to propagate the taste sensation from the taste buds on the tongue