Exam 1 - BIOS252 / BIOS 252 (Latest 2024 / 2025) : Anatomy And Physiology II With Lab - Chamberlain

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




cardiac muscle - ANSWER - short, fat,
branched
- uninucleated
- in heart
- attached to intercalated discs
- involuntary
- striated

,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

, 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