Question

Which nerve supplies the 2nd arch of the tongue, and what sort of receptors are found there?

a) Trigeminal; Proprioceptors
b) Facial; Taste buds
c) Glossopharyngeal; Pain receptors
d) Vagus; Thermoreceptors

Answer 1

The facial nerve supplies the second arch of the tongue and is associated with the taste buds, responsible for perceiving taste sensations.

Step-by-step explanation:

The nerve that supplies the second arch of the tongue is the facial nerve (cranial nerve VII). The type of receptors found there are taste buds. Taste buds are responsible for detecting the five types of taste sensations: sweet, salty, sour, bitter, and umami. The facial nerve is responsible for taste in the anterior two-thirds of the tongue and for salivation in the oral cavity, while the glossopharyngeal nerve (cranial nerve IX) conveys taste sensations from the posterior one-third of the tongue. In addition, the vagus nerve (cranial nerve X) provides taste sensation to a small area in the extreme posterior of the tongue and is involved in the gag reflex.