What is the difference between External Respiration and Internal Respiration?

Internal respiration's significant difference is that internal respiration refers to the set of metabolic reactions that occur within the cells to create energy through the oxidation of glucose and other organic molecules. External respiration refers to the progression of transferring oxygen from the external environment to the cells and moving carbon dioxide from the body. It is a crucial process for life as it distributes oxygen to extract energy from food through internal respiration. Internal respiration is also known as cellular respiration. It is the process of energy production through the breakdown of glucose, which occurs within the cells. It can be anaerobic or aerobic.

External respiration is a kind of respiration that occurs between the eels of the body and the environment. Two stages are contained in external respiration; that is, the breathing stage and the gas exchange stage. The first stage, which is the breathing stage, simply describes the phenomenon whereby oxygen is taken into the body while carbon dioxide is expelled out. For the second stage, which is the exchange stage, the blood capillaries exchange blood with the alveoli of the lungs. In external respiration, gases usually move between cells. Internal respiration, on the other hand, occurs within and also includes all the cells of the body, and not only the cells of the lungs. It makes use of oxygen in breaking down molecules to release energy in the form of ATP (adenosine triphosphate). This kind of respiration is usually referred to as cellular respiration since its activities occur within the cell. Lastly, internal respiration can occur in two forms, which are aerobic and anaerobic respiration.

When you say external respiration, this means that you are exchanging different gases within the external environment. This normally occurs in one part of the lungs called the alveoli. When you say “internal respiration,” you are referring to the exchange of gases that normally occur within the internal environment. This means that your blood and your tissues are exchanging gases. A lot of people think that respiration and breathing are the same. There are some differences in terms of the number of steps done. When you breathe, you simply need to inhale and exhale. When you respirate, you go through glycolysis, Kreb’s Cycle, and finally, the Electron Transport Chain.