1.   A muscular spasm in the coronary artery can cause a heart attack.

2.   A note on her office door explains that shifting heavy loads without the help of porters brought on muscular back spasms.

3.   In addition to uncontrollable facial tics and jerky muscular spasms, Miles sometimes emits strange noises that people mistake for laughter.

4.   Doctors said the elder Ryan has a muscular spasm in an artery that leads to his heart, Reid Ryan said.