diffusion-the movement of particules from a high concentration to a low concenntration
functions of the respiratory system -to take in oxygen, then the bloodstream transports the oxygen all around the body
epiglotis-flap of tissue attached to the trachea and closes to prevent you from chocking
diaphragm- it contracts when air has been drawn in through inhalation and exhalation
trachea and bronchi- airways that bring gases to and from your lungs
bronchioles- bring air to and from the alveoli
alveoli- allows diffusion of different gasses between the circulatory system and the respiratory system
processofinhalation-ribcage goes upwards, lungsexpand, diaphragm and intercoastal muscles contracts, oxygen is drawn through the trachea, bronchus, broncholi and then diffuses into the the capillares
nose-gasenters and leaves the body through the nose, it has hair and mucus to filter and remove the dust particles
