The Breathing System

Label A?

• Nose

• Nasal Passage

• Epiglottis

• Mouth

Label B?

• Osaphagus

• Bronchus

• Trachea

• Lung

Label C?

• Stomach

• Heart

• Lung

• Liver

Gas exchange occurs in the (a)   .

Tick all that are true.

What happens during gas exchange?

• Carbon dioxide moves from the blood into the alveoli and oxygen moves into the blood.

• Oxygen moves from the blood into the alveoli and carbon dioxide moves into the blood.

• Oxygen is pumped around the body in the blood and carbon dioxide is exhaled out.

• Carbon dioxide is pumped around the body in the blood and oxygen is exhaled out.

Choose the right fill in the blanks.

____________ flattens (and contracts) and moves _______________. Ribs move up and outwards (due to contraction of _____________ between ribs). __________fill up with ______ and expand into the extra space created in the ________.

• Diaphragm, downwards, intercostal muscles, Lungs, air, chest

• Trachea, Upward, muscles, Stomach, carbon dioxide, head

• Alveoli. sideways, ligaments, liver, oxygen, stomach

• Diaphragm, sideways, tendons, lungs, gas, chest

Tick all that apply.

_____________ _______________ & ____________ _____________that are exhaled are

• Oxygen

• carbon dioxide

• waster vapor

• gases