Plasma | Blood | Class X

Plasma is a pale coloured fluid which contributes 55% of blood volume. Plasma contains 90 to 92% of water and 8 to 10% of the following substances:

  • Plasma proteins mainly albumin, globulins and fibrinogen
  • Nutrients like glucose, amino acids, fatty acids and glycerol
  • Respiratory gases like oxygen and carbon dioxide
  • Excretory substances like ammonia, urea, uric acid, creatinine, etc
  • Mineral ions such as Na+, K+, Ca2+, Mg2+, Cl-, HCO3-, PO43-
  • Enzymes, hormones, antibodies
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