Prathom 6 Internal organs

1. The ______________ is the muscular organ that pumps blood through the body

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2. The heart is about the size of the closed _____________.

• feet

• head

• fist

• mouth

3. Our heart is located in the __________ side of the chest.

• upper

• lower

• left

• right

4. This organ pick up oxygen from the air and release carbon dioxide out. What organ is this?

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5. The body needs __________ to burn food for energy. What kind of natural gas is it?

• oxygen

• carbon dioxide

• nitrogen

• helium

6. _______________ is the gas we breath out. It is a waste material. What kind of gas is it?

• oxygen

• carbon dioxide

• nitrogen

• helium

8. It is a large organ of the digestive system. What organ is it?

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8. This is what we feel when we need food because our stomach is empty. What is this?

• hungry

• sleepy

• tired

• thirsty

9. In the lungs , the oxygen in the air goes into ______________ to be taken around the body.

• water

• minerals

• blood

• fluids

10. The ____________________ is the process of breaking down food after eating into a form that the body can use.

• respiratory system

• cardiovascular system

• digestive system

• nervous system