External Respiration is where gasses are absorbed into the blood through the alveolar capillary beds.
Internal respiration is where the gasses are transferred into the cells from the blood.
Gas exchange is the process in which the oxygen gets in the blood while carbon dioxide and water gets out of the blood.
Carbon dioxide flows out of red blood cells.
Gas exchange happens in the Alveoli
=== === === === === === === ===
Alveoli is where gas exchange occurs.
=== === === === === === === ===
The gas occurs by simple diffusion through the cells.
Alveoli
Respiration
Capillary system is where gas exchange occurs
gas exchange occurs between pulmonary capillaries and the alveoli in the lungs.
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
alveoli
The Gills
Rattlesnakes have lungs and gas exchange occurs there.