Oxygen and Carbon Dioxide Crossing Between Blood and Air in the Lungs

question 7

Multiple Choice

Oxygen and carbon dioxide crossing between blood and air in the lungs must pass through cells of the following types:

• A) type I pneumocyte only
• B) type I pneumocyte and endothelial cells
• C) type I pneumocyte and type II pneumocyte
• D) type II pneumocyte only
• E) Clara cells and endothelial cells

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Definitions:

Eardrum

Also known as the tympanic membrane, it vibrates in response to sound waves and is a key component of the middle ear.

Temporal Bone

A bone of the skull situated at the sides and base of the cranium, surrounding the ear canal.

Endolymph

A fluid within the inner ear that plays a key role in hearing and balance, found within the labyrinth.

Olfactory Adaptation

The temporary, normal inability to distinguish a particular odor after a prolonged exposure to that airborne compound.