Physiological responses in cross-country sprint skiing; a in regulation, control and homeostasis.

Write 6 pages with APA style on – Physiological responses in cross-country sprint skiing; a in regulation, control and homeostasis. (1500 words). One of the changes that promote greater oxygen diffusion is the contraction of the muscles takes a lot of oxygen because the oxygen is needed to replace Adenosine Triphosphate (ATP) that has undergone the process of hydrolysis at the time relaxation of muscles. Therefore, relaxation of muscles is essential because it leads to increase the supply of blood for metabolisms. Another change is the vascular resistance of the skeletal muscles. The resistance of skeletal muscles leads to build up of pressure in the arteries. There is buildup of pressure is due to the narrowing down of the diameter of the arteries, thus leading to increased heartbeat. There are several capillaries around the cardiac muscles. therefore when there is resistance to the flow of the blood, the diffusion distance is also reduced. The reduced distance for the diffusion in turn affects the exchange of gases like oxygen and carbon dioxide. Buffering agents reverse the hydrogen ion that reduces the PH and maintain it between 7.38 and 7.42 which is a neutral Potential Hydrogen. There are extracellular buffer agent and the intracellular buffer agents. The extra cellular buffers are like bicarbonates and ammonia while the intracellular buffers are like proteins and phosphates.

Moreover, the kidney can also work by eliminating the toxic substances that accumulate in the body tissues but in the case of thorough exercise it may not be efficient. In addition, renal physiology is active in maintaining the level of PH in the body. In a way of responding to the low PH or the acidity, the tube-like cells reabsorb bicarbonate from the fluids that flows in the body tube. The tubular cells are in the linings of tubes like the collecting duct. Again the collecting duct has cells those secrets a lot of hydrogen ions thus manufacturing a lot of bicarbonates, a process known as ammonia genesis. The process leads to the formation of ammonia buffer.

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