The human body

The air we breathe in contain a gas

• Carbondioxide

• Nitrogen

• Oxygen

• Neon

In adult normal heart beat is _______ times per min

• 10

• 12

• 14

• 16

In breathing in the diaphragm muscle contract and moves ________

• Downward

• Inward

• Outward

• Relax

It is a living thing that lives on or in the body of another living things

• Parasite

• Macroorganisms

• Host

• Vector

It is not a part of respiratory system

• Lungs

• Windpipe

• Kidney

• Diaphragm

It kills bacteria in a food that we have eaten

• Tears

• Acid

• Mucus

• Skin

In breathing out the ribs moves _________ and inwards.

In breathing in the ________ gets bigger

Arteries carry blood containing food and _______ away from the heart.

It is a chemical substance that kills some bacteria