141. Respiratory system is derived from
A
Ectoderm
B
Endoderm
C
A and B both
D
Endo mesoderm
Answer :
Endo mesoderm
142. If the thoracic wall but not the lungs are punctured
A
The lungs get inflated
B
The man dies as the lungs get collapsed
C
The breathing rate decreases
D
The breathing rate increases
Answer :
The man dies as the lungs get collapsed
144. Rate of respiration is directly affected by
A
CO2 concentration
B
O2 in trachea
C
Concentration of O2
D
None of the above
Answer :
CO2 concentration
145. What is the common element in haemoglobin and Myoglobin
A
Fe
B
Cu
C
Mn
D
Mg
Answer :
Fe
146. Tidal volume and Expiratory reserve volume of an athlete is $$500\,mL$$ and $$1000\,mL$$ respectively. What will be his Expiratory capacity if the residual volume is $$1200\, mL?$$
A
$$1500\,mL$$
B
$$1700\,mL$$
C
$$2200\,mL$$
D
$$2700\,mL$$
Answer :
$$1500\,mL$$
147. Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
A
carbon disulphide
B
chloroform
C
carbon dioxide
D
carbon monoxide
Answer :
carbon monoxide
148.
The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and/or characteristics.
A
B-pleural membrane-surrounds ribs on both sides to provides cushion against rubbing
B
C-Alveoli-thin walled vascular bag like structures for exchange of gases
C
D-Lower end of lungs-diaphragm pulls it down during inspiration
D
A-trachea-long tube supported by complete cartilaginous rings for conducting inspired air
Answer :
C-Alveoli-thin walled vascular bag like structures for exchange of gases
149. Hamburger's phenomenon is also called
A
HCO3
B
Chloride shift
C
Hydrogen shift
D
Voluntary breathing
Answer :
Chloride shift
150. Oxygen in lungs ultimately reaches
A
Alveoli
B
Trachea
C
Bronchus
D
Bronchioles
Answer :
Alveoli