The respiratory system is involved in the transport of respiratory gases like oxygen and carbon dioxide in the blood.
Hemoglobin and myoglobin are both essential oxygen-binding proteins.
- Hemoglobin transports oxygen in red blood cells (erythrocytes). The protein has a special affinity for oxygen, known as its oxygen-carrying capacity that's influenced by several factors like temperature or pH.
- Myoglobin is an intracellular protein that stores oxygen within muscle tissue for use during exercise. It has a very high affinity for oxygen compared with hemoglobin and functions to store oxygen.
Learn the mechanisms used to transport respiratory gases with the interactive animations and diagrams below. Get a crash course in respiratory system anatomy.