Where does gas exchange occur in the lung?

A) alveolus
B) primary bronchus
C) pulmonary artery
D) terminal bronchiole
E) trachea


Answer: A) alveolus

Anatomy & Physiology

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The average volume of semen is 2.75 L, ranging from 2 to 6 L, the higher volumes following periods of elevated sexual activity

a. True b. False Indicate whether the statement is true or false

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The muscularis layer of the alimentary canal contain which of the following?

Anatomy & Physiology