★ Cardiovascular and Respiratory Quiz
normal aging changes of lungs
A. airways produce more mucous
B. airways become less flexible
C. coughing less effective
D. alveoli regenerate
Select your answer:
Topics:
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Integumentary system › View Number 8 on diagram
A. Blood vessels
B. Veins
C. Shaft
D. Nerve
Pulmonology › View
Microscopic sacs where gas exchange takes place; are called:
A. alveoli
B. bronchi
C. villi