| A | B |
|---|
| Muscle | body organs made up of bundles or fibers |
| voluntary muscle | movement by choice |
| involuntary muscle | automatic movement controlled by brain |
| skeletal muscle | attaches to bones |
| skeletal muscle | striated and voluntary |
| smooth muscle | involuntary, react and tire slowly |
| smooth muscle | digestion |
| skeletal muscle | write your name |
| cardiac muscle | in the heart |
| cardiac muscle | does not tire |
| cardiac muscle | muscle cells branch and weave together |
| contracting muscle | working muscle |
| muscle tone | muscle in a constant state of contraction |
| flexor | bends part of the body |
| extensor | straightens part of the body |
| adductor | pull body part towards body |
| abductor | pull body part away from body |
| lactic acid | waste product of movement |
| oxygen debt | espiratory system can;t keep up with oxygen need during exercise |
| cramps | muscles contract and don't relax |
| bruise | direct blow to muscle, blood vessels break under the skin |
| bursitis | small sacs surrounding tendons and bone become inflamed |
| hernia | tear in abdominal muscles |
| muscular dystrophy | disease which slowly destroys muscle tissue |
| trapezius | raises shoulder |
| masseter | moves lower jaw |
| biceps | bends arm |
| triceps | straightens arm |
| pectoralis major | pulls arm towards chest |
| obliquus externus | flattens abdominals |
| gastrocnemius | bends leg |
| sartorius | rotates thigh |
| quadriceps | straightens knee |
| intercostals | between ribs - aids breathing |
