Cellular+Respiration

= Cellular Respiration = =The epiglottis goes down and blocks the trachea so food does not go down. When food goes down your trachea this is referred to as care surrounded by blood capillaries and they contain millions of little alveolar cells which is where gas exchange takes place. Oxygen and the air move from the alveoli to the capillaries. Carbon dioxide moves from the capillaries to the alveoli. =

