Human Anatomy and Physiology AFCAT Questions

AFCAT Biology

Human Anatomy and Physiology MCQ Questions


7.
Lungs are covered by a double-layered membrane called:
A.
Pleura
B.
Peritoneum
C.
Pericardium
D.
Meninges
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ANSWER :
A. Pleura
8.
The thoracic chamber is bounded on its lower side by which dome-shaped muscle?
A.
Diaphragm
B.
Pectoralis major
C.
Intercostal muscle
D.
Sternum
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ANSWER :
A. Diaphragm
9.
Inspiration is initiated by the contraction of:
A.
Internal intercostals only
B.
Pectorals only
C.
Abdominal muscles
D.
Diaphragm and external intercostal muscles
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ANSWER :
D. Diaphragm and external intercostal muscles
10.
The volume of air inspired or expired during normal breathing (Tidal Volume) is approximately:
A.
500 mL
B.
100 mL
C.
1500 mL
D.
2500 mL
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ANSWER :
A. 500 mL
11.
The Inspiratory Reserve Volume (IRV) in a healthy adult averages:
A.
1000–1100 mL
B.
2500–3000 mL
C.
500 mL
D.
4500 mL
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ANSWER :
B. 2500–3000 mL
12.
The Expiratory Reserve Volume (ERV) in a healthy adult averages:
A.
3000 mL
B.
1000–1100 mL
C.
500 mL
D.
2500 mL
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ANSWER :
B. 1000–1100 mL