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30 terms

Ch. 6 Muscular System

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cardiac, smooth
muscle tissue: involuntary
cardiac, skeletal
muscle tissue: banded appearance
smooth
muscle tissue: longitudinally and circularly arranged layers
skeletal
muscle tissue: dense connective packaging
cardiac
muscle tissue: figure-8 packaging of the cells
cardiac
muscle tissue: coordinated activity to act as a pump
skeletal
muscle tissue: moves bones and he facial skin
skeletal
muscle tissue: refereed to as the muscular system
skeletal
muscle tissue: voluntary
perimysium
connective tissue surrounding fascicle
epimysium
connective tissue ensheathing the entire muscle
sacromere
contractile unit of muscle
fiber
a muscle cell
endomysium
thin connective tissue investing each muscle cell
sarcolemma
plasma membrane of the muscle cell
myofibril
a long; filamentous organelle found within muscle cells that has a banded appearance
myofilament
actin- or myosin- containing structure
tendon
cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone
fascicle
a discrete bundle of muscle cells
sacroplasm
cytoplasm in muscle cells
movement, posture, joint stabilization, heat generation
functions of the muscle system
myosin filaments
thick myofilaments mostly made up of myosin protein, but also contain ATPase enzymes, which spit into ATP
cross bridges
projections of myosin heads
thin filaments
myofilaments composed of the contractile protein, actin
aponeurosis
any of the deeper and thicker fascia that attach muscles to bones; ex flattened tendons
excitability, contractility, extensibility, elasticity
functional charactaristics of muscle tissue
directly attached
epimysium of the muscle is fused to the periosteum of a bone
indirectly attached
connective tissue wrappings extend beyond the muscle as a tendon or aponeurosis
myoglobin
Sarcoplasm has numerous glycosomes and a unique oxygen-binding protein called
syncytium
Each cell is a ________ produced by fusion of embryonic cells