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Chapter 11 Test Part 1

Across
Extensible and Elastic. Stretches slightly under tension and recoils when released. Resists excessive stretching and protects muscle form injury. Returns muscle to its resting length. Contributes to power output and muscle efficiency.
Plasma membrane of a muscle fiber
Stem cells that fused to form each muscle fiber early in development
Capable of being stretched between contractions
(Responsiveness) To chemical signals, stretch, and electrical changes across the plasma membrane
Flattened nuclei pressed against the inside of the sarcolemma
Alternating light and dark transverse bands. The results from arrangement of internal contractile proteins.
Long protein cords occupying most of sarcoplasm
Returns to its original rest length after being stretched
Attachments between muscle and bone matrix. Continuous with collagen fibers of tendons. In turn, with connective tissue of bone matrix.
Muscle cell is muscle fiber(30 cm long)
Down
Connective tissue surrounding entire muscle
Red pigment; provides some oxygen needed for muscle activity
Usually subject to conscious control
Shortens when stimulated
Muscle that is voluntary, striated muscle usually attached to bones
Connective tissue around muscle cell
Local electrical change triggers a wave of excitation that travels along the muscle fiber
Packed into spaces between myofibrils
Connective tissue around muscle fascicle
Cytoplasm of a muscle fiber
Carbohydrate stored to provide energy for exercise
Cells unspecialized myoblasts remaining between the muscle fiber and endomysium. Play a role in regeneration of damaged skeletal muscle tissue.