Oxygen dissociation curves, Biology

Assignment Help:

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).


Related Discussions:- Oxygen dissociation curves

Are gametes always made by meiosis, Q. Are gametes always made by meiosis? ...

Q. Are gametes always made by meiosis? In the haplontic haplobiontic life cycle and in the plant life cycle (diplobiontic life cycle) gametes are made by mitosis and not by mei

Illustrate the aqueous phase in sol processing, Illustrate the aqueous phas...

Illustrate the aqueous phase in sol processing In a sol possessing a continuous aqueous phase, the colloidal particles have an electrically charged surface.  The ionized groups

How can total count can be obtained?, How Can Total Count Can Be Obtained? ...

How Can Total Count Can Be Obtained? Total count can be obtained microscopically by using fluorescent dyes such as acridine orange or DNA stain DAPI. The counts obtained micros

Subphylum opalinata, Subphylum Opalinata Body covered with longitudin...

Subphylum Opalinata Body covered with longitudinal rows of cilium like ,organelles but true ciliature absent. Parasitic; cytosome lacking; two to many nuclei of one type.

Chemoreceptors, Chemoreceptors These are receptors included in percept...

Chemoreceptors These are receptors included in perception of chemical stimuli. You will see that there are three kinds of Chemoreceptors among metazoans:  i) Those concerne

Explain the steps of exercise, Explain the Steps of Exercise You have l...

Explain the Steps of Exercise You have learnt the steps of exercises in Block 3, Unit 1 of theory block. Let us review the steps. In aerobic exercises one has to under go fo

Explain structural and functional relationship, Describe the location and s...

Describe the location and structure of the pituitary gland and explain its structural and functional relationships with the hypothalamus.

Describe thg epa current registration process?, How will the plant-incorpor...

How will the plant-incorporated protectants rules change EPA's current registration process? The rules clarify which plant-incorporated protectants are needed to be evaluated u

Microbiology and parasitology, Describe the methods that are used for the i...

Describe the methods that are used for the isolation and identification of bacteria.(20 marks)

Pulmonary embolism, Systemic Infection Serious infections increase total...

Systemic Infection Serious infections increase total body metabolism and thus impose hemodynamic burden on the heart. Increased heart rate associated with infections is an addit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd