AnswersAnatomy Physiology BThe Respiratory SystemQuestion 11
11
AssignmentMultiple Select

The Respiratory System

Question 11 • Anatomy & Physiology B

What is it about the structure of the alveolar-capillary unit that makes diffusion possible? Select all that apply.

Answer
A
The capillaries are large.
B
The cell wall of the alveoli is thin.
C
Many capillaries surround one alveoli sac.
D
There is always low pressure in the alveolar-capillary unit.
E
The alveolar-capillary unit provides a large surface area.
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