What word is used to describe "building muscle"?
What word is used to describe "losing muscle?"

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

A 22-year-old female patient slipped running down stairs and has injured her right tibia and fibula. you have used an air splint to splint the injury. to test the splint, you can:

Can someone give me a hand with this one.