What divides the dorsum of the tongue into its anterior and posterior parts?
What divides the dorsum of the tongue into its anterior and posterior parts?
What divides the dorsum of the tongue into its anterior and posterior parts?
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….Musculature.
| Muscle | Palatoglossus |
|---|---|
| Type | Extrinsic |
| Origin | Palatine aponeurosis |
| Insertion | Lateral tongue |
| Action | Elevates posterior tongue |
Which type of papillae on the tongue is arranged in a V shape on the tongue?
Vallate papillae
Vallate papillae are arranged in a V-shape anterior to the sulcus terminalis and studded with numerous taste buds. Innervation is by the glossopharyngeal nerve (CN IX). Fungiform papillae are mushroom-shaped papillae with erythematous domes located on the lateral aspects and at the apex of the tongue.
What is dorsal tongue?
Dorsal surface: this is the top of the tongue, which is closest to the roof of the mouth. Ventral surface: this is the undersurface of the tongue, which is connected to and closest to the floor of the mouth.
What are Circumvallate papillae?
Circumvallate papillae are located at the base of your tongue. They’re large and round, and they house several thousand taste buds. Foliate papillae are clustered on the back edges of your tongue. Each one contains several hundred taste buds.
Which cranial nerve is responsible for taste to the posterior 1/3 of the tongue?
The three nerves associated with taste are the facial nerve (cranial nerve VII), which provides fibers to the anterior two-thirds of the tongue; the glossopharyngeal nerve (cranial nerve IX), which provides fibers to the posterior third of the tongue; and the vagus nerve (cranial nerve X), which provides fibers to the …
What is the anterior 2/3 of tongue?
The tongue itself is divided into 2 sections. There is the oral part which is the anterior 2/3 which lies in the oral cavity proper and a pharyngeal part which is the posterior 1/3 of the tongue which lies in the oropharynx area.
Which nerve is responsible for taste?
What is the name for the largest papillae on the posterior 1/3 of the tongue?
Circumvallate papillae
Circumvallate papillae The papillae in this region are very large, notice the scale bar. These papillae have taste buds in the medial walls of the cleft. These papillae are larger than the other two types of papillae.