Can you give any two homeostatic functions of the blood?
Answers:
Plasma Proteins are very important for rapid buffering action. In plasma there are three main classes of proteins: albumin, globulin, and fibrinogen, most of which are produced in the liver and lymphoid tissue, and all of which can contribute to the maintenance of acid-base balance. However, they are helped in this vital homeostatic role by other buffering systems:
bicarbonate and phosphate buffers in the blood and tissue fluid act within seconds or fractions of seconds, like the proteins
modulation of the rate of carbon dioxide removal from the blood by the respiratory system helps maintain an appropriate pH, but acts more slowly over minutes rather than seconds
excretion of acids and alkalis by the kidneys has a powerful influence on acid-base balance but takes longer - hours and days
With regard to the effects of a deficiency of plasma proteins - this would depend to some extent on the reason for the deficiency. For example, in nephrosis (a kidney disease) the plasma proteins are lost into the urine, and together with loss of normal kidney buffering functions this would threaten acid-base homeostasis. On the other hand, if the reduction in plasma proteins is the result of under-production of the proteins by the liver, it is possible that the other buffering systems could compensate at least for a time. However, we should also remember the other roles of plasma proteins in producing colloid osmotic pressure, immune reactions, and blood coagulation when considering the effects of a deficiency.
to kp cool, the blood is closer to the skin so we can lose as much energy as we can, thats y we look red wen were hot
to kp warm, the blood is further, thats y we look white wen were cold
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