Oxygen dissociation curves, Biology

Oxygen Dissociation Curves

The oxygen content of blood fully saturated or oxygenated can be calculated. It is known as the oxygen capacity of blood and this varies for different species. In humans the oxygen carrying capacity is 20 ml oxygen per 100 ml blood. The relationship of oxygen carrying capacity to surrounding oxygen concentration can be shown graphically by oxygen dissociation curves.

1504_Oxygen Dissociation Curves.png

Figure:  Oxygen dissociation curve shows how haemoglobin's oxygen binding capacity depends on partial pressure of oxygen.

These curves are obtained by subjecting blood samples to different partial pressures of oxygen. The per cent oxyhaemoglobin saturation at different partial pressures of oxygen is plotted. The oxygen dissociation curve is S-Shaped or a sigmoid curve. From the graph we can see how haemoglobin acts as a carrier of oxygen. Total saturation occurs in the lungs where arterial pressure is above 95 mm Hg and the oxygen is unloaded at low Po2 found in tissues (about 40 mm Hg).

Posted Date: 1/15/2013 8:00:44 AM | Location : United States







Related Discussions:- Oxygen dissociation curves, Assignment Help, Ask Question on Oxygen dissociation curves, Get Answer, Expert's Help, Oxygen dissociation curves Discussions

Write discussion on Oxygen dissociation curves
Your posts are moderated
Related Questions
What does boiling do to an enzyme? Enzymes are denatured (their shape is changed so it doesn't work) when boiled.

Why do diabetic patients often undergo dietary sugar restriction? What are the main complications of diabetes mellitus? Diabetic patients are often advised to ingest fewer carb

Explain Glutathione peroxidase Glutathione peroxidase is a natural antioxidant present in many tissues. Together, with vitamin E it  is part of the body's  defense against lipi

Interferon alfa In about one third of adults and children with chronic hepatitis B, treatment with interferon alfa-2b leads to loss of HBeAg, return to normal aminotransferase

What are the examples of Law of Minimum?

Complete feed blocks For manufacturing the pellets, processes such as grinding, mixing, steaming and pressing and some times extruding, are applied using special and expensive

The environmental pollution has become a biggest threat  to humanity. To over-come this problem a suitable preventive legislation is need of hour. The problems of acid rain ,ozone

what is reproductive system? what is urinary System? What is Nervous system

Explain the Toxicity of nicotinic acid? Although therapeutically useful in lowering serum cholesterol, administration of chronic high oral doses of nicotinic acid can lead to h