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.
Substance-induced mood disorder can cause depressed mood, lack of interest in activities, fatigue, and more. Myasthenia gravis is caused by abnormal immune responses that weaken muscles, particularly of the face. Small cell lung cancer is the least common type of lung cancer and can cause a cough, chest pain, and more.