AP BIOLOGY

ANIMAL PHYSIOLOGY

GAS EXCHANGE IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The name of the two membranes surrounding the lungs.
A
cell walls
B
cell membranes
C
pleural membranes
D
lung membranes
Explanation: 

Detailed explanation-1: -There are two layers; the outer pleura (parietal pleura ) is attached to the chest wall and the inner pleura (visceral pleura) covers the lungs and adjoining structures, via blood vessels, bronchi and nerves.

Detailed explanation-2: -The pleura includes two thin layers of tissue that protect and cushion the lungs. 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.

Detailed explanation-3: -A pleura is a serous membrane that folds back on itself to form a two-layered membranous pleural sac. The outer layer is called the parietal pleura and attaches to the chest wall. The inner layer is called the visceral pleura and covers the lungs, blood vessels, nerves, and bronchi.

Detailed explanation-4: -The pleural membrane is thin, moist, slippery and has two layers. The outer layer, called the parietal pleura, is attached to the inside of the rib cage and the diaphragm while the inner layer, called the visceral pleura, covers the lungs.

Detailed explanation-5: -Both lungs have oblique fissure and the right is further divided by a transverse fissure. The oblique fissure in the left lung separates the superior and the inferior lobe. The oblique and horizontal fissure divides the lungs into superior, middle and inferior lobes.

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