| A | B |
| skeletal muscle | muscle type that is voluntary and striated |
| smooth muscle | muscle type that is involuntary |
| cardiac muscle | muscle type that is involuntary, striated with intercalted discs |
| contraction | movement of a muscle |
| stimulus | nerve impulse |
| energy | derived from the breakdown of ATP |
| origin | attachment to a stationary bone |
| insertion | attachment to a moveable bone |
| prime mover | muscle that contracts during movement |
| antagonist | muscle that relaxes during movement |
| atrophy | shrinking of a muscle due to lack of use |
| hypertrophy | excessive enlargement of a muscle due to over use |
| contracture | permanent shortening of a muscle usually due to immobility |
| fibromyalgia | characterized by muscle pain, fatigue and headache |
| tetanus | Bacterial infection that causes over stimulation of a muscle |
| botulism | Bacterial infection that blocks nerve impulses resulting in the inability of a muscle to contract |