Page 19 - E-Science Prim.6 2024-2025 U1 Con.2,3_Handy

Organ Function

Mouth Digestion of food begins in mouth:
- Teeth: chew (crush) food by jaw muscles

to help the action of enzymes
- Saliva: a liquid has enzyme softens and
breaks the food. “Chemical digestion”

Esophagus Muscles push the food down to the
esophagus (muscular tube) then to

stomach.

Stomach - A muscular organ.
- It makes churning movement.
Small - It secretes digestive fluids have acid and
intestine
enzymes break the food.
- A long, winding tube up to 6 m long.
- Enzymes secreted from pancreas and

gallbladder breaks down the food more.

- The wall of small intestine absorbs

nutrients through tiny blood vessels to

all body parts. (Absorption)

- Undigested food flows into the colon as

a soupy mixture.

Large - It absorbs water from the undigested
intestine food.
(Colon)
- Rectum stores the remained solid mass
“feces or stool” until it leaves the body

through anus (muscular opening)

- No digestion but absorption of water.

31

First Term