2006-11-19 00:14:59 · 4 answers · asked by damodharan c 1 in Science & Mathematics ➔ Zoology
Hi. Blood platelets are the start of the clotting process. They stick together and thicken the blood at a wound (a good thing) or in artery (a bad thing). I don't think oxygen is the starter mechanism. The lungs provide oxygen for hemoglobin to absorb, so that oxygen is tied up.
2006-11-19 02:54:16 · answer #1 · answered by Cirric 7 · 0⤊ 0⤋
The reason is that the blood does not have direct contact with the air. Before the air enters your blood it passes through what are called Alveoli. The air is trasported through the thin membrane of capillaries ( the smallest blood vessels) and into the blood stream. The Alveoli and the capillaries form a barrier which allows the gas in and restricts the blood flow from contacting directly with the air.
2006-11-19 08:40:53 · answer #2 · answered by Maverick off Top Gun 3 · 0⤊ 0⤋
Because clotting is a science in itself, and not just a matter of drying out or coming in contact with air. I know a young woman who helped present a paper on one small aspect of clotting, and she said I wouldn't really understand much if I read it. She was right. Clotting is a surprisingly complex process, not fully understood.
2006-11-19 08:49:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
blood does not clot as oxygen bind to heamoglobin and form oxyheamoglobin.
2006-11-19 11:03:41 · answer #4 · answered by muskan_a 1 · 0⤊ 0⤋