RESPIRATION Respiration supply O 2 to & remove CO 2 from all body cells 3 main stages:
RESPIRATION 1. Breathing Inspiration - taking air into the lungs Expiration - removing air from the lungs 2.External Respiration exchange of O 2 & CO 2 between air and blood.
RESPIRATION 3. Internal Respiration exchange of O 2 & CO 2 between blood and cells Cellular Respiration chemical reactions that take place in the mitochondria to release energy from glucose
GAS EXCHANGE 3 requirements: 1. surface area must be large enough to occur very rapidly. 2. must take place in a moist environment 3. diffusion gradient must be maintained (move from higher conc to lower conc)
GAS EXCHANGE IN ANIMALS respiratory pearson.notebook
HUMAN RESPIRATORY SYSTEM Organs work together to move gases in and out of body