The anatomic features of the respiratory membrane that make alveolar gas exchange so efficient are

A. its hearty thickness and the presence of oxygen transport pumps.
B. the high degree of moisture and the large ratio of volume to surface area.
C. its thinness, high water content, and scarcity of capillaries.
D. its large surface area and minimal thickness.


Answer: D

Anatomy & Physiology

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A substance cannot dissolve in water or the mucous that coats the olfactory epithelium. What is true about this substance?

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The ________ forms the final relay point for ascending sensory information that will be projected to the primary sensory cortex.

Fill in the blank(s) with the appropriate word(s).

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Anatomy & Physiology