Page 97 - Science and Technology Std 3

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The digestive system enables the body to use the absorbed
nutrients. If the food you have eaten is not digested, the body
becomes weak. Also, you can get diseases.
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The digestive system uses the water we drink to soften the
food in the stomach. Water is absorbed and used in different

parts of the body.

Exercise

1. Match each part of the digestive system in A with its function
in B. Write your answer as shown in the example given.

Example
Pancreas - secretes enzymes important for digestion.

A Parts of the B Function

digestive system

(i) Oesophagus A. softens food substances
by digesting to make a
thick liquid
(ii) Anus
B. absorbs water and returns
it to the body
(iii) Stomach C. digests and absorbs foods

nutrients

(iv) Small intestine D. removes undigested food
substances out of the
body

E. carries chewed food from

mouth to the stomach

2. Draw and label the human digestive system.

90

PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Science and Technology 3.indd 90 03/08/2019 11:02