The digestive system is a continuous tube approximately 30 feet long, beginning at the mouth and ending at the anus, responsible for breaking down food into nutrients, absorbing them into the bloodstream, and eliminating waste. Digestion begins in the mouth, and food travels through the esophagus to the stomach, where it is mixed with digestive juices, and further broken down in the small intestines before waste is excreted through the anus. Organs such as the pancreas and liver contribute digestive juices and bile to facilitate the digestion of carbohydrates, fats, and proteins.

1. DIGESTIVE SYSTEM and ITS FUNCTION

2. appendix

4. What is the digestive system?
The energy required for all the processes and
activities that take place in our bodies is
derived from the foods we eat. The digestive
system changes the food by breaking it down
into tiny particles.
This process is called DIGESTION.
The digestive system is a continuous tube that
begins at the mouth and ends at the anus.
Measuring about 30 feet long in the average
adult.
It has 3 stages of digestion:
● the digestion of food into nutrients,
● the absorption of nutrients into the
bloodstream, and
● the elimination of solid wastes.

7. How does my digestive system work?
Digestion starts in the
………………………
Your …………………. chew and chop
up the food into smaller pieces
called bolus that we can swallow.
…………………… makes the
swallowing easy.
…………………………………………….….
called salivary amylase in saliva
MOUT
H.
TEET
H
SALIVA
DIGESTIVE JUICES

8. How does my digestive system work?
The food is moved down a tube
called ………………………………
toward the stomach by wavelike
muscular contractions called
peristalsis. The muscles of the
oesophagus contract to squeeze
and push the food downwards
ESOPHAGUS

9. How does my digestive system work?
Inside the …………………………………
the food
mixes with the digestive juices
that turn the food into a thick
liquid called chyme similar to
porridge.
stomach

10. How does my digestive system work?
The …………………………………………
breaks down the food even more
until the food particles are small
enough to move into the blood.
small intestines

11. How does my digestive system work?
Any undigested bits of food that
our body can’t use move into
the
……………………………….. . The large
intestine also absorbs water and
some substances back into the
blood.
large
intestines

12. How does my digestive system work?
The solid undigested food bits
called feces, are pushed out of
the body as waste through the
…………………
anus

13. OTHER PARTS OF THE DIGESTIVE SYSTEM
The makes a
digestive juice that has enzymes
that break down carbohydrates,
fats, and proteins. The pancreas
delivers the digestive juice to the
small intestine through small
tubes called ducts.
pancreas

14. OTHER PARTS OF THE DIGESTIVE SYSTEM
The makes a
digestive juice called bile that
helps digest fats and some
vitamins. Bile ducts carry bile
from your liver to your
gallbladder for storage, or to the
small intestine for use.
liver
Bile ducts

15. OTHER PARTS OF THE DIGESTIVE SYSTEM
The r stores
bile between meals. When you
eat, your gallbladder squeezes
bile through the bile ducts into
your small intestine.
gallbladder
Bile ducts

16. Additional information: