Question

a) identify the type of papillae that arrow a points to.
b) what does arrow b point to?
c) name one nerve involved in the sensation of taste. a nerve that carries taste fibers
this is a model of the tongue with arrow a pointing to an inverted v in the back of the tongue and arrow b pointing to a small dots.

Explanation:

Part A

Arrow A points to the inverted V - shaped area at the back of the tongue. The papillae in this region are circumvallate (or vallate) papillae. These are large, circular papillae arranged in a V - shape at the posterior part of the tongue.

Arrow B points to small dots which are taste buds. Taste buds are the sensory organs for taste and are often associated with papillae (like the circumvallate papillae shown in the diagram). They are located within the papillae and are responsible for detecting taste stimuli.

One nerve involved in taste sensation is the Facial Nerve (CN VII). It carries taste fibers from the anterior two - thirds of the tongue. Other possible nerves include the Glossopharyngeal Nerve (CN IX) which carries taste from the posterior one - third of the tongue, or the Vagus Nerve (CN X) which carries taste from the epiglottis and pharynx.

Answer:

Circumvallate (Vallate) Papillae

Part B