1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
A
pO2 = 159 and pCO2 = 0.3
B
pO2 = 104 and pCO2 = 40
C
pO2 = 40 and pCO2 = 45
D
pO2 = 95 and pCO2 = 40
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Assertion (A) : A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.

Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.

In the light of the above statements, choose the correct answer from the options given below
A
(A) is false but (R) is true
B
Both (A) and (R) are true and (R) is the correct explanation of (A)
C
Both (A) and (R) are true but (R) is not the correct explanation of (A)
D
(A) is true but (R) is false
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Select the correct events that occur during inspiration.
(i) Contraction of diaphragm
(ii) Contraction of external inter-costal muscles
(iii) Pulmonary volume decreases
(iv) Intra pulmonary pressure increases
A
Only (iv)
B
(iii) and (iv)
C
(i), (ii) and (iv)
D
(i) and (ii)
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Identify the wrong statement with reference to transport of oxygen.
A
Binding of oxygen with haemoglobin is mainly related to partial pressure of O2
B
Partial pressure of CO2 can interfere with O2 binding with haemoglobin
C
Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
D
Low pCO2 in alveoli favours the formation of oxyhaemoglobin
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12