The upcoming discussion will update you about the difference between external and internal respiration in animals. Difference # External Respiration: 1. It is a physical process in which oxygen (O2) is absorbed and carbon dioxide (CO2) is given out. 2. Enzymes do not play any role in the process. 3. Restricted to respiratory organs only. 4. Respiratory structures are body [...]
In this article we will discuss about the need for the exchange of gases in respiration. 1. Transport of oxygen in the air or the oxygen dissolved in water to organs of respiration, gills or lungs. In cases, the body surface functioning as the respiratory organ, it is in direct contact with the oxygen in water or air. 2. Diffusion [...]
In normal condition an animal body requires enormous amount of oxygen to satisfy the demands of the energy yielding oxidative phosphorylation reactions. Various respiratory pigments serve to carry the necessary oxygen from the atmosphere to different parts of the body. Of the several pigments, haemoglobin is the most efficient in transporting respiratory gases. Haemoglobin molecule has high affinity for oxygen [...]