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Cards In This Set
| Front | Back |
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Functions of muscular system
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- movement
- body support and maintenance of posture - production of heat |
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Skeletal muscle
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- striated
- voluntary - attached to the skeleton |
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Smooth muscle
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- involuntary
- no striations - found in the walls of hollow organs, the urinary bladder and uterus |
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Caridac muscle
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- striated
- involuntary - found only in the heart |
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Muscles are attached to bone how?
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By dense fibrous connective tissue (tendons)
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Sacrolemma
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Cell membrane of a muscle fiber
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Sacroplasmic reticulum
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The ER of muscle fiber
a reservoir for calcium ions produces actin (thin) & myosin (thick) |
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Fascia
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- fibrous connective tissue membrane covering muscle
- under is a sack of bundles |
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Fasicle
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Bundle of individual myofibrous (muscle cells)
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Skeletal muscle
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- consistes of masses of fiber (myofibrils) arranged in bundles (fasicles)
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Epimysium
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Dense connective tissue that surrounds the entire muscle
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Perimysium
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Extensions of epimysium that penetrate inward into the muscle to surround fasicle bundles
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Endomysium
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The delicate layer of connective tissue that surrounds each individual muscle fiber
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Epimysium, perimysium, endomysium
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Bind muscles together to provide support, strength to entire muscle
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Diaphram
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Most important skeletal muscle
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