The Human Body

The brain, spinal cord and nerves form this system

• circulatory

• respiratory

• nervous

• digestive

When we breathe out, this gas leaves the lungs through the nose

• oxygen

• nitrogen

• carbon dioxide

• hydrogen

This organ lies inside the skull

• nose

• heart

• brain

The organs of the circulatory system are

• heart

• stomach

• blood

• blood vessels

Air pollution is caused by

Group of organs together form a _____________

Taste buds are present on

• mouth

• tongue

• throat

• nose

The process of taking in oxygen is called____________

• exhalation

• respiration

• inhalation

• digestion

Your body couldn’t breathe without this system. Which one is it?

• Respiratory System

• Digestive System

• Circulatory System

• Excretory System

We should breathe through nose only. Why?