ANATOMY

Detailed explanation-1: -A V-shaped line (shallow groove)-the sulcus terminalis, divides the tongue into an anterior 2/3 and a posterior 1/3. The mucosa covering the upper surface of the tongue is thrown into numerous projections called the lingual papillae in the anterior 2/3rd of the tongue.

Detailed explanation-2: -The median sulcus of the tongue separates the body into left and right halves. The terminal sulcus, or groove, is a V-shaped furrow that separates the body from the base of the tongue. At the tip of this sulcus is the foramen cecum, a remnant of the proximal thyroglossal duct.

Detailed explanation-3: -The human tongue is divided into anterior and posterior parts by the terminal sulcus which is a V-shaped groove.

Detailed explanation-4: -Circumvallate papillae: Also known as vallate papillae, 7-11 of these are located on the backside of your tongue, containing over 100 taste buds each. Fungiform papillae: Over 200 are found on the front side of your tongue and contain 3-5 taste buds each.

Detailed explanation-5: -Vallate papillae, also known as circumvallate papillae, are arranged in a V-shape anterior to the sulcus terminalis and studded with numerous taste buds. [6] The innervation of these papillae is by the glossopharyngeal nerve (CN IX).