Marker. 1  Noun. A line of credit extended by a casino or cardroom. 2  Noun. A small object placed on top of a player's hand for the purpose of preventing it from being mucked or fouled. 3  Noun. A plastic device used to denote who is in the dealer's position.
Myasthenia gravis is caused by a defect in the transmission of nerve impulses to muscles. It occurs when normal communication between the nerve and muscle is interrupted at the neuromuscular junction -- the place where nerve cells connect with the muscles they control.
Myasthenia gravis. Myasthenia gravis is also related to disrupted communication between nerves and muscles and also characterized by weakness and rapid fatigue of any of the muscles that are under voluntary control, including muscles in your face, eyes, arms and legs. ...yasthenia Gravis is a chronic autoimmune neuromuscular disorder that is characterized by fluctuating weakness of the voluntary muscle groups. ... How to Recognize Myasthenia Gravis Symptoms www.lifescript.com/health/briefs/h/how_to_recognize_myasthenia_gravis_symptoms.aspx. How to Recognize Myasthenia Gravis Symptoms.