Friday, March 27, 2009

[Biology Form 5] The Daily Transporter

Blood plays many important roles, and one of them is transport.

It transports oxygen, enzymes, water, nutrients (glucose, vitamins, minerals, fatty acids, glycerol and amino acids), carbon dioxide, hormones, antibodies, waste substances, and even heat!

Transport of oxygen;
  • Cell involved - Red blood cell
  • Pigment used - Haemoglobin
  • Oxygen transported by the blood in the form of oxyhaemoglobin

Carbon dioxide transported in blood;
  • 70% in the form of hydrogen carbonate ions
  • 23% in the form of carbomino-haemoglobin
  • 7% in the form of dissolved gas in plasma

Possible consiquences to his health if a man's erythrocyte count is below normal;
  • When less oxygen reaches the cells in his body, the man may suffer from anaemia. As a result, he may faint easily, feel tired and be unenergetic.

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