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Trava [24]
2 years ago
8

Asthma narrows airways to the lungs and in the lungs by contraction of muscles around the air passages, swelling of the airway l

ining, and build-up of excessive mucus. Because of this, asthma makes both the ___________ and ______________ systems work harder to deliver oxygen to the cells throughout the body. A) respiratory; nervous B) respiratory; muscular C) respiratory; digestive D) respiratory; circulatory
Biology
1 answer:
Fynjy0 [20]2 years ago
7 0
D) respiratory; circulatory
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