BIO 012 Lecture Notes - Lecture 22: Buccal Pumping, Aorta, Trachea
Document Summary
Carbon dioxide is found in larger amount the body than externally, so it is easily. There is more oxygen in the atmosphere at normal altitudes than in the lungs, so. The circulatory and cardiovascular system are linked to: digestion and absorption. Oxygen is used as a final electron acceptor at the end of the electron transport chain during the process of respiration. Gas diffusion occurs according to partial pressure gradients. oxygen easily moves from the atmosphere into the lungs exhaled into the environment. A= surface area of respiration membrane (lamellae, parabronchi, alveoli) (p1-p2)= difference in partial pressures. Manipulating the surface area changes the rate of diffusion. That is what we tested in the fish gill lab. You do not want the membrane thickness to be too thick to be too thick; will slow down the rate of diffusion. Right within contact with oxygen because they jut out directly into water.
