Fifth - Blood picks up the oxygen and takes it to other parts of the body, First - The diaphragm contracts (goes down) to provide space for air to go inside the lungs which expand in, Third - The air travels down the trachea, Fourth - The air reaches the lungs , Second - Breath in Oxygen through nose and mouth,

Classement

Style visuel

Options

Changer de modèle

Restauration auto-sauvegardé :  ?