So what exactly is myosthenia gravis? Well, this is an autoimmune disease of our body that affects our skeletal tissue. So basically, our body begins to produce an antibody that it normally shouldn't. And when this antibody is produced, it begins to circulate inside our blood and it binds onto acetylcholine receptors found between the motor neurons of our nervous system and our muscle tissue, skeletal muscle tissue. And by binding onto these acetylcholine receptors it blocks the action potential, our electrical signal from actually moving from the nervous system to our skeletal muscle. And this decreases our ability to actually voluntarily control our contraction of skeletal muscle.