Exam 1 - BIOS252 / BIOS 252 (Latest 2024 /
2025) : Anatomy And Physiology II With Lab -
Chamberlain skeletal muscle - ANSWER - long, thin, cylindrical in shape
- multinucleated
- attached to bone & skin
- voluntary
- striated
- uninucleated
- in heart
- attached to intercalated discs
- involuntary
- striated 1 / 3
cardiac muscle - ANSWER - short, fat, branched
smooth muscle - ANSWER - in hollow organs
- ininucleated
- involuntary
- lack striations
excitability - ANSWER responsiveness to chemical signals, stretch, and electrical changes across the plasma membrane conductivity - ANSWER local electrical excitation sets off a wave of excitation that travels along the muscle fiber contractility - ANSWER shortens when stim extensibility - ANSWER capable of being stretched b/w contractions 2 / 3
elasticity - ANSWER returns to its original rest length after being stretched organization of skeletal muscle - ANSWER microfilaments, myofibril, muscle fiber, muscle fascicle, and skeletal muscle endomysium - ANSWER thin sleeve of loose CT around each fiber perimysium - ANSWER thicker layer of CT that wraps fascicles fascicles - ANSWER bundles of muscle fibers wrapped together
- / 3