Which process must occur for a muscle to be able to relax

relaxation

Explanation:

relaxation is best relax to muscle. it is relax our bones and muscles.

please mark me as a brainlist..

i think its through the fallopian tube

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.