Internal Respiration
Exchange of gases between blood and tissue (all over body)
Internal respiration refers to the exchange of gases, specifically oxygen and carbon dioxide, between the body tissues and the bloodstream. This process involves several steps:
1. Oxygen dissolves into the bloodstream from the alveoli in the lungs.
2. The oxygen is transported by the blood to the body’s tissues.
3. The oxygen diffuses across the capillary walls and into the cells of the body’s tissues.
4. Inside the cells, oxygen is used in cellular respiration, a process that converts nutrients into energy and produces carbon dioxide as a waste product.
5. Carbon dioxide diffuses from the cells back into the bloodstream and is carried to the lungs to be exhaled.
Internal respiration is a continuous process that ensures the body’s tissues are supplied with the oxygen and nutrients they need and that waste products are removed. Dysfunction in internal respiration can lead to conditions such as hypoxia (lack of oxygen to the body’s tissues) or hypercapnia (too much carbon dioxide in the bloodstream). It is important to maintain proper internal respiration for optimal overall health.
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Internal Respiration: The Process of Gas Exchange Between Tissues and Blood.