Respiratory system

The action of breathing called

deoxygenated

• with oxygen

• without oxygen

• without carbon dioxide

• none of them

known as throat

• pharynx

• trachea

• larynx

• bronchi

During inhalation

• diaphragm moves down and intercostal muscle relax

• diaphragm moves up and intercostal muscle relax

• diaphragm moves moves down and intercostal muscle contract

• diaphragm moves up and intercostal muscle muscle contract

gas exchange occurs in

• pharynx

• larynx

• trachea

• alveoli

The action of breathing in called