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A&P I connect tissue
Stack #20487
| Question | Answer |
|---|---|
| skeletal muscle tissue | striated, voluntary (ex. found in biceps) |
| cardiac muscle tissue | striated, involuntary , only found in heart |
| smooth muscle tissue | nonstriated (smooth) involuntary (ex. found in digestive system, arteries, intestine) |
| functions of skeletal muscle | produce body movement, stabilize body position, storing and moving substances within the body (ATP), generating heat (thermogenesis=shiverring) |
| properties of muscle tissue | electrical excitability, contractilily, extensibility, elasticity |
| superficial fascia | aka subcutaneous layer, separates muscle from skin |
| deep fascia | holds muscles with similar functions together |
| 3 layers of connective tissue | epimysium, perimysium, endomysium |
| epimysium | surrounds whole muscle |
| perimysium | surrounds muscle bundles |
| endomysium | surrounds individual muscle fibers |
| tendon | all 3 layers of connective tissue connect at each end of a muscle and form this |
| NMJ | neuromuscular junction; where muscle fiber and nerve (neuron) connect and communicate |
| sarcolema | plasma (cell) membrane of muscle fiber |
| Transverse tubules (T tubules) | extend from sarcolemma into sarcoplasm |
| sarcoplasm | the cytoplasm of skeletal muscle fiber |
| myofibrils | cylindrical structures within each muscle fiber, contains bundles of thick and thin myofilaments |
| sarcoplasmic reticulum | "sleeve covering myofibril"; network of membranous channels surrounding each myofibril |
| terminal cisternae | surrounds T tubule- expanded ends of SR on either side of T tubule; 2 to a tubule |
| filaments | short protein structures arranged into sarcomeres consisting of thin actin and thick myosin filaments |