Explain the transport of O 2 and CO 2 between alveoli and tissue with diagram.

The following diagram shows the transport of O 2 and CO 2 between alveoli and tissue fluid: ∙ In alveoli, pO 2 is 104 mm Hg and pCO 2 is 40 mm Hg. In deoxygenated blood, pO 2 is 40 mm Hg: which is less than the partial pressure of oxygen in alveoli. Due to this it enters the blood in alveoli. ∙ In deoxygenated blood, pCO 2 is 45 mm Hg: which is more than the partial pressure of CO 2 in alveoli. Due to this, carbon dioxide exits from tissue cells and enter the alveoli. ∙ Once blood reaches the tissues, the partial pressure of oxygen in oxygenated blood is 95 mm Hg which is more than partial pressure of oxygen in deoxygenated blood ( 40 mm H g ) . Hence, oxygen from blood enters the tissues. ∙ At the tissue level, the partial pressure of carbon dioxide in deoxygenated blood is more than that in oxygenated blood. Hence, carbon dioxide exits from the tissues.

Explain the transport of O 2 and CO 2 between alveoli and tissue with diagram.

The following diagram shows the transport of O 2 and CO 2 between alveoli and tissue fluid: ∙ In alveoli, pO 2 is 104 mm Hg and pCO 2 is 40 mm Hg. In deoxygenated blood, pO 2 is 40 mm Hg: which is less than the partial pressure of oxygen in alveoli. Due to this it enters the blood in alveoli. ∙ In deoxygenated blood, pCO 2 is 45 mm Hg: which is more than the partial pressure of CO 2 in alveoli. Due to this, carbon dioxide exits from tissue cells and enter the alveoli. ∙ Once blood reaches the tissues, the partial pressure of oxygen in oxygenated blood is 95 mm Hg which is more than partial pressure of oxygen in deoxygenated blood ( 40 mm H g ) . Hence, oxygen from blood enters the tissues. ∙ At the tissue level, the partial pressure of carbon dioxide in deoxygenated blood is more than that in oxygenated blood. Hence, carbon dioxide exits from the tissues.

E M B I B E

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>LONG ANSWER TYPE QUESTIONS>Q 1

HARD

11th CBSE

IMPORTANT

Earn 100

Explain the transport of O₂ and CO₂ between alveoli and tissue with diagram.

Important Questions on Breathing and Exchange of Gases

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IMPORTANT

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 2

Which of the following does not occur during breathing?

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IMPORTANT

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 4

It is known that exposure to carbon monoxide is harmful to animals because:

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NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 9

The incidence of Emphysema, a respiratory disorder, is high in cigarette smokers. In such cases:

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IMPORTANT

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 10

The respiratory process is regulated by certain specialized centres in the brain. One of the following listed centres can reduce the inspiratory duration upon stimulation.

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IMPORTANT

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 11

CO₂ dissociates from carbamino haemoglobin when:

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IMPORTANT

NCERT Exemplar Biology - Class 11>Chapter 17 - Breathing and Exchange of Gases>MULTIPLE CHOICE QUESTIONS>Q 14

The oxygen - haemoglobin dissociation curve will show a right shift in case of:

EASY

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