What is digestion?
Digestion is the process by which
digestive system breaks down
food into tiny particles , which is
absorbed by the body for energy,
growth, and cell repair.
Organs of digestive system
1.Tongue
2.Salivary glands
3.Oesophagus
4. Stomach
5.Large intestine
6.Small intestine
Mouth
What do you think is the function of
teeth while eating?
Our teeth chew and
chop up the food into
smaller pieces that we
can swallow.
Do you know why are we asked to
chew well before swallowing?
Digestion starts in the mouth.
Saliva makes the food moist which also
makes swallowing easy.
Digestive juices in saliva start to digest
the food.
What are digestive juices?
Juices secreted by organs like
mouth (saliva), liver and pancreas
that help in breaking down the
food further.
Oesophagus:
(Pronunciation: ee·saw·fuh·guhs)
The food we swallow is pushed
down a tube called the
oesophagus and into the
stomach. (also called food pipe)
The muscles of the oesophagus
contract to squeeze and push
the food downwards.
Stomach:
Inside the stomach the
food mixes with
digestive juices that
turn the food into a
thick liquid similar to
porridge.
Small intestine:
The small intestine also
produces digestive
juices breaks down the
food even more until
the food particles are
small enough to move
into the blood.
Large intestine:
Any undigested bits of
food that our body can’t
use move into the large
intestine. The large
intestine also absorbs
water and some
substances into blood.
Anus:
The solid undigested
food bits are pushed
out of the body as
waste.
(Pronunciation: ay·nuhs)