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CHAPTER 1
1.1 Digestion System
1) MOUTH
It is the first section of the digestive system,
where food is received and saliva is produced.
it is also known as oral cavity.
TONGUE
It is a muscular
organ with a
mucous membrane TEETH
covering it.
Moves food around Consists of primary teeth
the mouth during and permanent teeth.
chewing. Your permanent teeth
Rolls the chewed (28 – 32 teeth) grind and
food into a bolus break down the food.
(ball) to be
swallowed.
Chewing is important because it breaks down
the food into smaller pieces – to be swallowed.
Glands in mouth will produce saliva –which
contains important digestion enzymes and
lubricates the food and may easily flow into the
esophagus.
NUTRITION AND HEALTH 2023
Chapter 1 & 2 8
