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21 Cards in this Set
- Front
- Back
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Origin
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anchor point of agonist; attachment of a muscle that remain relatively fixed during muscular contraction
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Insertion
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Point of movement of agonist; moveable attachment of muscle
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agonist
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Generate specific movement
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antagonist
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oppositional modulation movement
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Synergist
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additional effort to support antagonist
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fixator
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stabilze origin of agonist
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fulcrum
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part of the lever system; the fixed point
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First-class Lever
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the fulcrum is in the middle
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Second Class Lever
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the load is in the middle
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Third - Class Lever
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the effort is in the middle
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What are 5 ways muscles are named
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Location
Shape Orientation Number of heads Action |
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Mechanical Advantage
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power lever; Condition that occurs when the load is close to the fulcrum and the effort is applied far from the fulcrum; allows a small effort exerted over a relatively large distance to move a large load over a small distance
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Mechanical Disadvantage
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Speed Lever - condition that occurs when the load is far from the fulcrum and the effort is applied near the fulcrum; the effort applied must be greater than than the load to be moved
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epimysium
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sheath of fibrous connective tissue surrounding a muscle
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perimysium
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Connective tissue enveloping bundles of muscle fibers
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fascicle
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bundles of nerve or muscle fibers bound together by connective tissue
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Direct Attachment
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called a fleshy attachment) is where the perimysium and epimysium
of the muscle unite and fuse with the periosteum of a bone, perichondrium of a cartilage, a joint capsule, or the connective tissue underlying the skin |
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Tendon
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cord of dense fibrous tissue attaching muscle to bone
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Raphe
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the line of union of the halves of various symmetrical parts.
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Apponeurosis
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fibrous or membranous sheet connection a muscle and the part it moves
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Ligament
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band of regular fibrous tissue that connects bones
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