Mammalian lungs
A) are basically a dense capillary network encased by a thin epithelial layer.
B) provide a small diffusion distance between air and blood at the exchange surface.
C) are a mass of branching ducts and cupped-shaped chambers.
D) have gas exchange in alveolar ducts.
E) All of the answers are correct.

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The Answer of Mammalian lungs
A) are basically a dense capillary network encased by a thin epithelial layer.
B) provide a small diffusion distance between air and blood at the exchange surface.
C) are a mass of branching ducts and cupped-shaped chambers.
D) have gas exchange in alveolar ducts.
E) All of the answers are correct.

Mammalian Lungs