ANATOMY and PHYSIOLOGY MCQ Set-25
Anatomy and Physiology MCQ Question 166:-
% of O2 in inspired air is –
[PGI-2006]
(a) 78%
(b) 21%
(c) 16%
(d) 52%
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Ans: (b) 21% ✔
Anatomy and Physiology MCQ Question 167:-
The pigment which is responsible for colour of skin is-
(a) Melanin
(b) Carotene
(c) Red pigment
(d) All of the above
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Ans: (a) Melanin ✔
Anatomy and Physiology MCQ Question 168:-
Blood vessels are found in-
(a) Epidermis layer
(b) Dermis layer
(c) Both (a) & (b)
(d) Neither in epidermis nor in dermis
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Ans: (b) Dermis layer ✔
Anatomy and Physiology MCQ Question 169:-
What is the function of smooth endoplasmic reticulum in a cell-
(a) They form protein
(b) They synthesises lipids
(c) They synthesises ATP
(d) All of the above
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Ans: (b) They synthesises lipids ✔
Anatomy and Physiology MCQ Question 170:-
Left lung is divided into-
(a) Two lobes
(b) Three lobes
(c) Four lobes
(d) Five lobes
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Ans: (a) Two lobes ✔
Anatomy and Physiology MCQ Question 171:-
At which level the trachea is divided into bronchi-
(a) At the level of 5th thoracic vertebra
(b) At the level of 3rd thoracic vertebra
(c) At the level of 4th thoracic vertebra
(d) At the level of 5th cervical vertebra
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Ans: (a) At the level of 5th thoracic vertebra ✔
Anatomy and Physiology MCQ Question 172:-
After entering the lung left bronchus is divided into-
(a) Two branches
(b) Three branches
(c) Four branches
(d) Five branches
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Ans: (a) Two branches ✔
Anatomy and Physiology MCQ Question 173:-
The main muscles used in respiration, are-
(a) Intercostal muscles
(b) Diaphragm
(c) Biceps and triceps muscles
(d) Both (a) and (b)
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Ans: (d) Both (a) and (b) ✔
Anatomy and Physiology MCQ Question 174:-
The organ which separates the thoracic and abdominal cavities is known as-
(a) Lung
(b) Heart
(c) Diaphragm
(d) Stomach
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Ans: (c) Diaphragm ✔
Anatomy and Physiology MCQ Question 175:-
In following which sentence is not correct regarding sclera-
(a) It is firm fibrous membrane
(b) It maintains the shape of eye
(c) It gives attachment to the extrinsic muscles of the eye
(d) It forms outermost layer of anterior aspect of eye ball
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Ans: (d) It forms outermost layer of anterior aspect of eye ball ✔
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