What is internal respiratory?

Internal respiration refers to the exchange of gases between the blood and the body's tissues. During this process, oxygen carried by the blood is delivered to cells, while carbon dioxide, a waste product of cellular metabolism, is taken up by the blood for transport back to the lungs. This exchange occurs at the capillary level and is essential for maintaining cellular function and overall homeostasis. It differs from external respiration, which involves the exchange of gases between the lungs and the atmosphere.