Page 5 - Digestive System

(1) Mouth

The mouth is a cavity in where teeth
and tongue are Read and Learn
existed and the Milk teeth:

salivary glands Molars Are weak teeth,
open to it as Premolars formed through the
well. childhood phase in

Canine a number of 20 teeth
• Teeth Incisors (ten teeth in every jaw,
Lower jaw
The teeth divided into 4 incisors,
number in an Incisors 2 canines and 4
Canine
adult are 32, Premolars molars). These teeth are
each jaw has 16 completely replaced by
teeth divided Molars strong ones before the
into (4 incisors, age of twelve.

2 canines and Upper jaw
d
d
10 molars).
- Incisors and canines cut and tear
food into small pieces, where molars Read and Learn

grind the food to ease its swallowing The tongue has
process. several functions. It is

• Tongue the speech organ since
it changes the sound
It turns food inside the mouth cavity coming from larynx
and mixes it up with saliva assisting into understandable

the process of food swallowing and words.
tasting.

• Salivary glands
Read and Learn
They are three pairs of glands secrete Mumps
a liquid known as the saliva which Is a viral disease

contains digestive substances called infects the salivary

enzymes that digest starches, then gland which is located
convert them into simpler substances beneath the ear causing

known as sugars. its inammation.

Shorouk Press
Second Term Zamzam Presses 11