11. Volume of air inspired or expired with each normal breath is known as
A
Inspiratory capacity
B
Total lung capacity
C
Tidal volume
D
Residual volume
Answer :
Tidal volume
12. What would happen when blood is acidic
A
Binding of oxygen with haemoglobin increases
B
Red blood corpuscles are formed in higher number
C
Binding of oxygen with haemoglobin decreases
D
There is no change in oxygen binding nor number of RBC
Answer :
Binding of oxygen with haemoglobin decreases
13. Respiration is
A
Physical process
B
Chemical process
C
Physico chemical process
D
Thoracic
Answer :
Physico chemical process
14. External respiration refers to exchange of gases between
A
Inspired air and blood
B
Blood and tissue fluid
C
Alveolar air and blood
D
Occulomotor
Answer :
Occulomotor
15. Oxygen dissociation curve of haemoglobin is
A
Sigmoid
B
Hyperbolic
C
Linear
D
Hypobolic
Answer :
Sigmoid
16. Name the chronic respiratory disorder caused mainly by cigarette smoking
A
emphysema
B
asthma
C
respiratory acidosis
D
respiratory alkalosis
Answer :
emphysema
17.
Figure shown schematic plan of blood circulation in humans with labels $$A$$ to $$D.$$ Identify the label and give its function's.
A
$$B$$-Pulmonary artery-takes blood from heart to lungs, $$P{O_2} = 90\,mm\,Hg$$
B
$$C$$-Vena Cava - takes blood from body parts to right auricle, $$PC{O_2} = 45\,mm\,Hg$$
C
$$D$$ - Dorsal aorta - takes blood from Heart to body Part $$P{O_2} = 95\,mm\,Hg$$
D
$$A$$-Pulmonary vein - takes impure blood from body parts, $$P{O_2} = 60\,mm\,Hg$$
Answer :
$$C$$-Vena Cava - takes blood from body parts to right auricle, $$PC{O_2} = 45\,mm\,Hg$$
18. Lungs of rabbit and man are
A
Sucken lungs
B
Pressure lungs
C
Aquatic lungs
D
None of the above
Answer :
Sucken lungs
19. Very high number of alveoli present in a lung is meant for
A
More space for increasing volume of inspired air
B
More area for diffusion
C
Making the organ spongy
D
Right auricle of heart
Answer :
More area for diffusion
20. Right lung of Rabbit has
A
2 lobes
B
4 lobes
C
5 lobes
D
6 lobes
Answer :
4 lobes