[PDF] Breathing and Gaseous Exchange  Question Bank PYQ NEET  Today I am going to share with you the previous year's question on the Breathing and Gaseous Exchange . Here is the question bank so you can download it .

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Breathing and Gaseous Exchange


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Breathing and Gaseous Exchange


1.   During CO2 transport, HCO3 diffuses from erythrocytes to plasma and in turn upsets the ionic equilibrium momentarily. In order to keep the ionic balance, an equal number of Cl– ions pass into the erythrocytes from plasma. This process is known as :
(1)  Hamburger phenomenon
(2)   Bicarbonate shift
(3)   Reverse chloride shift
(4)   Bohr Effect

2. The internal intercostal and abdominal muscles are :
(1) muscles of forced inspiration
(2)   muscles of forced expiration
(3)   muscles of heart
(4)   none of these

3.  What is the value of Po2 and Pco2 in pulmonary vein?
(1)   PCO2 = 95 mmHg; PO2 = 45 mmHg
(2)   PO2 = 95 mmHg; PCO2 = 40 mmHg
(3)   PCO2 = 40 mmHg; PO2 = 45 mmHg
(4)   PCO2 = 45 mmHg; PO2 = 45 mmHg

4.  In lungs, there is definite exchange of ions between RBC and plasma. Which is true ?
(1)   influx of Cl– ions into RBC    
(2) efflux of K+ ions from RBC

(3) influx of HCO3– ions into RBC 

(4) efflux of HCO3– ions from RBC

5.Chemosensitive area is found in :

(1) Pon's

(2)  Cerebrum

(3)  Medulla oblongata adjacent to rhythm centre

(4) Medulla oblongata adjacent to pneumotaxic centre


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