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CH 6 Muscles
Question | Answer |
---|---|
The ability to shorten with force | contractillity |
anterior thigh muscle | hamstrings |
skeletal muscle to respond to a stimulus | excitability |
the ability to be stretched | extensibility |
surrounded by a connective tissue sheath | epimysium |
connective tissue connected outside the epimysium | fascia |
the cytoplasm of each fiber is filled with | myofibrils |
2 major types of protein fibers | actin- thin myosin- thick |
basic structural and functional unit of the muscle | sarcomere |
fasciculi is surrounded around the loose connective tissue called | perimysium |
4 major functional characteristics | contractility, excitability, extensibility, elasticity |
sarcomeres join end to end to form | myofibrils |
the ends of the sarcomeres are called | z-lines (disc) |
the light band | i band, consists of actin |
dark central region in each sarcomere | a band, extends the length of the myosin |
the center of each sarcomere theres another light area called | h-zone, consist of only myosin |
the myosin myofilaments are anchored in the center of a sarcomere at a dark staining band called | m-line |