Summary. 1  Some knowledge of basic first aid could mean the difference between life and death. 2  Consider doing a first aid course, so that you will be able to manage if someone is injured or becomes ill. 3  CPR is a life-saving skill that everyone should learn. 4  Keep a range of first aid kits handy at home, in the car and at work.
The loss of motor neurons leads to weakness and wasting (atrophy) of muscles used for activities such as crawling, walking, sitting up, and controlling head movement. In severe cases of spinal muscular atrophy, the muscles used for breathing and swallowing are affected.
1. decrease in size of a normally developed organ or tissue; wasting. 2. to undergo or cause atrophy. disuse atrophy. atrophy of local musculature due to failure to use a part of the body, due usually to pain. Is separate from neurogenic atrophy when nerve damage causes atrophy from both disuse and denervation.