Which of the following conditions is characterized by varying degrees of weakness of the skeletal muscles and is considered to be a chronic, autoimmune disease?
A)Muscular dystrophy
B)Myasthenia gravis
C)Rhabdomyolysis
D)Rheumatism
E)Polymyalgia rheumatic

Question

Quizplus · Accepted Answer

Myasthenia gravis is a chronic autoimmune disease characterized by varying degrees of weakness of the skeletal muscles. Antibodies produced by the body's own immune system block the passage of neurotransmitters from motor nerves to muscle. The weakness increases with activity and decreases with rest. Facial muscles are often involved, causing problems with eye and eyelid movements, chewing and talking. Myasthenia breaks down into the suffix -asthenia meaning lack of strength and the root my- meaning muscle.

Which of the Following Conditions Is Characterized by Varying Degrees