ANATOMY

OF MOUTH

By:- firoz qureshi

Dept. psychiatric nursing

ORAL CAVITY

It is the first part of digestive tract. It is

divided into two parts:

Oral cavity proper.

Vestibule.

ORAL CAVITY PROPER:

It is the larger part of the oral cavity.

Anteriorly: alveolar arches with teeth and

gums on each side.

Roof: hard and soft palate.

Floor: two mylohyoid muscles and other soft

tissues.

Posteriorly: palatoglossal arch.

VESTIBULE:

The vestibule of mouth is a narrow space

that lies outside the teeth and gums and

inside the lips and cheeks.

LIPS AND CHEEKS

Lips are a pair of mobile musculo-

fibrous folds that surrounds the opening

of the mouth.

The lips are lined externally by skin and

internally by mucous membrane.

Cheeks are the fleshy flaps which lie over

maxilla and mandible and form a large part

of the face. Each cheek is continuous n

front with the lip.

TEETH

Teeth are mineralized or horny structures

projecting from the jaws.

Each tooth consists of the following three

parts:

Crown: which projects above the gum.

Root, which is embedded within the socket

of jaw beneath the gum.

Neck, it is the constricted part of tooth

present between the crown and root.

TYPE OF TEETH

Incisors: There are 4 incisors in each jaw, two

on each side of the median plane.

Canines: There are two canines in each jaw,

one on each side, present lateral to the

incisors.

TONGUE:

Tongue is a mobile muscular organ present

in the oral cavity.

Tip

Base

Root

Two lateral margins

Two surfaces: Dorsal surface and Ventral

or inferior surface.

PALATE:

It is an osteomuscular partition between

nasal and oral cavities. It also seperates

Nasopharynx from oropharynx.

It consists of two parts:

Hard palate forms the anterior 2/3 rd of the

palate.

Soft palate forms the posterior 1/3 rd of the

palate.

THANK YOU