G.N.M AND NURSING MCQ-12

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1. Surfactant is related to
(A) Respiration
(B) Digestion
(C) Excretion of urine
(D) Secretion of pituitary hormone

2. In deoxygenated blood, the partial pressure of O2 and CO2 respectively are
(A) 40 mm Hg and 80 mm Hg
(B) 60 mm Hg and 90 mm Hg
(C) 40 mm Hg and 44 mm Hg
(D) 24 mm Hg and 20 mm Hg

3. What is the action of surfactant in the human body-
(A) It prevents the alveoli from drying out
(B) Reduces surface tension
(C) During expiration, it prevents the alveolar wall from collapsing
(D) All of the above

4. In following, the partial pressure of which gas remains constant in both oxygenated and deoxygenated blood
(A) O2
(B) N2
(C) CO2
(D) None of the above

5. The main muscles used in respiration, are
(A) Intercostal muscles
(B) Diaphragm
(C) Biceps and triceps muscles
(D) Both (a) and (b)

6. BMR depends on all the following, except
(A) Bodyweight
(B) The surface area of body
(C) Amount of lean body mass
(D) Amount of adipose tissue

7. Number of intercostal muscles in the human being is
(A) 12 pairs
(B) 11 pairs
(C) 7 pairs
(D) 10 pairs

8. During external respiration
(A) O2 diffuses from blood to alveoli
(B) O2 diffuses from alveoli to blood
(C) O2 diffuses from blood to tissues
(D) O2 diffuses from tissues to blood

9. Intercostal muscles are found
(A) In between ribs
(B) In between thoracic vertebra
(C) In between thoracic and cervical vertebra
(D) In front of ribs

10. What happens during internal respiration
(A) CO2 diffuses from body tissues to blood
(B) CO2 diffuses from blood to alveoli
(C) O2 diffuses from blood to body tissues
(D) Both A and C