Tuesday, May 27, 2008

Circulotory system-blood

Blood performs many important functions within the body including:

  • Supply of oxygen to tissues (bound to hemoglobin which is carried in red cells)
  • Supply of nutrients such as glucose, amino acids and fatty acids (dissolved in the blood or bound to plasma proteins)
  • Removal of waste such as carbon dioxide, urea and lactic acid
  • Immunological functions, including circulation of white cells, and detection of foreign material by antibodies
  • Coagulation, which is one part of the body's self-repair mechanism
  • Messenger functions, including the transport of hormones and the signaling of tissue damage
  • Regulation of body pH (the normal pH of blood is in the range of 7.35 - 7.45)
  • Regulation of core body temperature
  • Hydraulic functions

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