Question

who increase the breathing rate bcoz of the contraction of the diaphragm and the rib muscle​

Answer 1

Contraction of the diaphragm expands the abdomen and the lower part of the rib cage (abdominal rib cage) . The rib cage muscles, including the intercostals

Answer 2

Explanation:

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale