Answer:
Both are breathing muscles
Explanation:
When rib muscles and the diaphragm contract they increase the volume of the chest cavity, increasing the air pressure outside the body, causing air to rush into the lungs to fill the vacuum created by the increase in volume.
Answer:
D.
Explanation:
The synonym for circulatory system is the cardiovascular system.
-1.00 would be the right one I would think....I am probably most likely wrong but i would say that.
