kena spinal muscular atrophy

What You Need to Know. Spinal muscular atrophy (SMA) is a disorder affecting the motor neurons—nerve cells that control voluntary muscle movement. These cells are located in the spinal cord. Because the muscles cannot respond to signals from the nerves, they atrophy — weaken and shrink — from inactivity. One in every 6,000 babies is born ... togel bolak balik kena