Question

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.

A) respiratory; nervous
B) respiratory; digestive
C) respiratory; circulatory

Answer 1

The answer is b :)

Step-by-step explanation:

Answer 2

C) respiratory: Circulatory

Step-by-step explanation:

Oxygen travels through the blood stream to muscles, and cells