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

Question

Question 8 options:

respiratory; digestive

respiratory; circulatory

respiratory; nervous

respiratory; muscular

Answer 1

respiratory; circulatory