Congenital myasthenic syndromes (CMSs) are a heterogeneous group of disorders that affect the safety margin of neuromuscular transmission — the depolarization that is required for propagation of ...

Read more about Eaton-Lambert syndrome. Myasthenia gravis is a disorder in which normal communication between the nerve and muscle is interrupted at the neuromuscular junction. Normally when impulses ...

Medically reviewed by Katrina Carter, DPT Voluntary muscles, also known as skeletal muscles, are muscles that can be consciously controlled, such as the muscles of your limbs, head, neck, and body.