The membranous sac which encloses lungs is consists of ………tough, flexible, transparent pleural membrane.
a) two
b) three
c) four
d)five
Explanation: The inner layer (visceral pleura) wraps around the lungs and is stuck so tightly to the lungs that it cannot be peeled off. The outer layer (parietal pleura) lines the inside of the chest wall.
Which of the following is/are the function/s of the pleural membrane?
a) protect the lungs
b) stop leaking air to thoracic cavity
c) reduce friction of lungs
d) all of these
Lungs Volume and Capacity
Average adult human how much total lung capacity (approximately)?
a) 5 liters
b) 6 liters
c) 3 liters
d) 4 liters
The volume of air exchanged during one breath in and out in quiet breathing is called……..
a) total volume
b) tidal volume
c) residual volume
d) extra volume
The tidal volume in human lungs is…….
a) 1.5 liters
b) 500 ml
c) 5 liters
d) 1000 ml
