Science: Check your progress; Unit 1

The main function of heart is ...........

• excretion

• breathing

• control

• digestion

• circulation

The main function of stomach and intestines is ...........

• excretion

• breathing

• control

• digestion

• circulation

The main function of lungs is ...........

• excretion

• breathing

• control

• digestion

• circulation

The main function of kidneys is ...........

• excretion

• breathing

• control

• digestion

• circulation

The main function of brain is ...........

• excretion

• breathing

• control

• digestion

• circulation

Food is pushed down the ............ into the stomach.

• mouth

• stomach

• intestines

• gullet

In the ........., the food is broken down into very small particles.

• mouth

• stomach

• intestines

• gullet

The food is mixed with digestive juices in the ...........

• mouth

• stomach

• intestines

• gullet

Undigested food is pushed out of the body through the end of the ...........

• mouth

• stomach

• intestines

• gullet

The food is chewed in the ...........

• mouth

• stomach

• intestines

• gullet