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Breathing and Exchange of Gases

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
 Discuss the transportation of oxygen.

Transportation of oxygen : It ctake splace in the following way :

1. In solution form : Oxygen is less dissolved in plasma–about 3% gets transported in solution form.

2. As oxyhaemoglobin : Oxygen combines with haemoglobin to form oxyhaemoglobin. One molecule of haemoglobin combines with four molecules of oxygen to form oxyhaemoglobin. In the alveoli there is high pO2, low pCO2, lesser H+ concentration and lower temperature, these factors favour the  formation of oxyhaemoglobin. Whereas in the tissues, where low pO2, high pCO2, high Hconcentration and higher temperature exist, . Since the Haemoglobin molecules take oxygen from respiratory organs and give oxygen to the cells of the body.

 Discuss the transportation of oxygen.

Fig. Diagram of the exchange of gases

About 97% oxygen is carried in combination with haemoglobin.

 Discuss the transportation of oxygen.
194 Views

What is the partial pressure of oxygen in  oxygenated blood ?

95 mm Hg
702 Views

Name the cavity having lungs.

Thoracic cavity.
448 Views

70% of carbondioxide is transported as ?

Bicarbonate
360 Views

By what amount the solubility of carbondioxide is more than the solubility of oxygen?

20 - 25 times
414 Views

Oxygen is carried by haemoglobin as?

Oxyhaemoglobin.
415 Views