What is the main definition of haemostasis.What is the control organ of haemostasis in the body.?

I only know that it is the control of the total internal environment but do not know its definition.What is the main definition of haemostasis.What is the control organ of haemostasis in the body.?
If you are talking about control of the total internal environment then you may mean homeostasis rather than haemostasis. Haemostasis is the control of bleeding by the body.





Homeostasis roughly literally means ';steady state';. A definition could be: The process that keeps the conditions within your body at the optimum level for cell function.





Claude Bernard was a french physiologist who was really interested in how body systems maintained such a steady state.





He stated ';the control of the internal environment is the condition of free life';. Basically, your body is a life support system for your body cells. If you don't maintain conditions within your body constant then your cells will die and so will you. But, if you can control your internal conditions regardless of the external environment then you can exploit a wider range of conditions. Humans are able to exist from the arctic circle to the equator and beyond because our bodies are so good at keeping internal conditions constant.





Homeostatic mechanisms within the body control several major factors. The most important ones are:





Temperature


Blood carbon dioxide levels


Blood water levels


Blood glucose levels





There is no one control organ that keeps these systems functioning. For example blood glucose concentration is controlled by the liver and pancreas and requires no input from the brain (when this system stops working properly one result can be diabetes).





Blood temperature is controlled by the hypothalamus which is a part of the brain that you have no conscious control over. It monitors the temperature of the blood and sends messages to other parts of the body tom maintain the temperature. If your blood is too hot it causes you to sweat to lose heat by evaporation. If your blood is too cold, you shiver, for example, to relaease more heat from respiration.





If I had to name the most important control organ, it would have to be the hypothalamus as it is involved in several homeostatic mechanisms, but really your whole body is involved.





Hope this helps.What is the main definition of haemostasis.What is the control organ of haemostasis in the body.?
Homeostasis, because you are talking about internal environment, is the maintenance of internal environment at a constant level. The homeostatic mechanisms are involved in maintaining body temperature, blood sugar level, blood pH, blood osmotic pressure (salt concentration, blood calcium/potassium level, blood cell concentration, blood gases and body fluid. By and large the Hypothalamus in the brain is involved in the maintenance of internal environment as this center has several monitoring cells as well as seat of autonomous nervous system. Hypothalamus is also controls the pituitary gland and hence all most all homeostatic functions are controlled by hypothalamus.
Hemostasis can refer to the physiologic process whereby bleeding is halted. Stopped bleeding is commonly referred to, however, as coagulation, but coagulation is only one type of hemostatic process.





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