Oral Anatomy Essentials: Incisive Papilla, Rugae, And Uvula Explained

Question 1. Uvula.
Answer:

It is a projection from the posterior edge of the middle of the soft palate.
Its connective tissue contains a number of glands and muscle fibers.
It plays a role in the articulation of some sounds.
The muscles of it raise and retract the uvula.
It is innervated by the pharyngeal branch of the vagus nerve.
Uvula gets swollen under the following conditions.
- Dehydration
- Smoking
- Allergic reaction.
- Viral or bacterial infection.

Question 2. Rugae.
Answer:

They are ridges of mucous membranes extending laterally from the incisive papilla and the anterior part of the raphe.

Site:

Function:

In speech.
Facilitate the movement of food backwards towards the pharynx Histology:
The epithelium is keratinized.
Their core is made of a dense connective tissue layer with fine interwoven fibers.

Question 3. Incisive papilla.
Answer:

It is formed by dense connective tissue.
It contains the oral parts of the nasopalatine ducts.
Ducts are lined by simple or pseudostratified columnar epithelium and surrounded by small, irregular islands of hyaline cartilage.
Small mucous glands open into the lumen of the ducts.
Ducts are rich in goblet cells.

Location:

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