Oxygen Transport in Blood

All four respiratory pigments are adapted to load and unload oxygen effectively in I the habitats where they have evolved, whether animals live on land where the air contains 210 ml of oxygen per litre or in fresh water containing 8.0 ml / litre or in the sea containing 6.4 ml / litre. The loading unloading reaction can be written as

 

The direction of this reaction depends on Po₂ of the environment and bond strength or affinity between haemoglobin and oxygen. In the lungs where Po, is high almost all deoxyhaemoglobin molecules bind to oxygen. Low Po₂ in the systemic capillaries promotes unloading. Similarly strong affinity favours loading and weak bonding favours unloading. Haemoglobin has a bond strength which permits 97% of haemoglobin to combine with oxygen when leaving the lung. At the same time the bond is sufficiently weak to permit unloading in tissues. Under normal resting conditions 22% of the oxygen is unloaded. This satisfies the oxygen need of the body simultaneously maintaining a reserve that is utilised during emergency conditions.

Posted Date: 1/15/2013 7:56:42 AM | Location : United States

Ask an Expert

Related Discussions:- Oxygen transport in blood, Assignment Help, Ask Question on Oxygen transport in blood, Get Answer, Expert's Help, Oxygen transport in blood Discussions

Write discussion on Oxygen transport in blood
Your posts are moderated

Write your message here..

Related Questions

Determine the preservation changes while cooking, Determine the Preservatio... Determine the Preservation Changes While Cooking? While cooking, two preservation changes (at least) occur which include: 1.  Destruction or reduction of microorganisms 2

Standard mrna and fibroblasts, You have discovered a novel alternatively sp... You have discovered a novel alternatively spliced gene (gene X) and you wish to study its regulation in an in vitro splicing assay.  The alternatively spliced product retains intro

Phylum Echinodermata, define and explain Water vascular system with podia a... define and explain Water vascular system with podia and tube-feet madreporite mostly present

Microorganism, microorganism microorganism

What are the specialized structures help adhesion cell, What are the specia... What are the specialized structures that help the adhesion between cells? The structures responsible for the union of the epithelial cells are known as cell junctions. The main

Flowering - development of plant, Flowering - Development of plant One... Flowering - Development of plant One of the major changes that occur during the life cycle of a plant is the transition from vegetative stage to the flowering stage. In this t

How does immune process that causes the hemolytic disease, How does the imm... How does the immune process that causes the hemolytic disease of the newborn take place? In a hemolytic disease of the newborn the mother has Rh- blood and this mother when gen

Combined use of diuretics, Combination of diuretics may be indicated in pat... Combination of diuretics may be indicated in patients previously resistant to furosemide alone. Profound diuresis and clinical improvement may occur after the addition of metolazon

List the stages of process of behaviour change, Q. List the stages of proce... Q. List the stages of process of behaviour change? Stages of behaviour change process: · Unawareness · Awareness · Acquiring knowledge · Motivation · Trial

Explain the taxonomy of lamarck, Explain the taxonomy of Lamarck? Lamar... Explain the taxonomy of Lamarck? Lamarck's taxonomy was mainly static in nature and his classification does not show its true value to the development of modern taxonomy. His m