Term
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Definition
| attachment to the immovable bone |
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Definition
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Definition
| provide major force for producing a specific movement |
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Definition
| oppose or reverse a particular movement |
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Definition
| add force to movement; reduce undesirable or unnessecary movement |
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Definition
| synergists that immobilize a bone or muscle's origin |
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Term
| functional muscle classifications |
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Definition
| fuxator, synergists, antagonist, prime mover |
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Term
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Definition
| location, shape, size, direction, number of origins, location of attachments, action |
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Term
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Definition
| occipitofrontalis- bipartite muscle consisting of frontalis, occipitalis, galea aponeurotica |
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Term
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Definition
| cranial aponeurosis connecting above muscles |
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Term
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Definition
| prime mover of the head; origin-sternum and clavicle; insertion-mastoid process |
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Term
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Definition
| prime mover of inspiration; flattens on contraction |
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Term
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Definition
| more superficial layer that lifts rib cage; allows inspiration |
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Term
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Definition
| deeper layer that aids in forced expiration |
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Definition
| prime mover of arm extension; origin-lumbar vertabrae and iliac crest; insertion-intertubercular groove of humerus |
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Term
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Definition
| supraspiatus, infraspinatus, teres minor, subscapulaus; reinforce capsule of shoulder; act ad synergists and fixators |
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Term
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Definition
| prime mover of arm abduction |
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Term
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Definition
| prime mover of arm flexion; origin-clavicle and sternum; insertion-intertublercular groove of the humerus |
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Term
| biceps brachii and brachialis |
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Definition
| prime movers of forearm flexion; origin-coronoid process and glenoid cavity; insertion-radial tuberosity |
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Term
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Definition
| acts as synergist; helps stabilize elbow |
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Term
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Definition
| prime mover of forearm extension |
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Definition
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Definition
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Definition
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Term
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Definition
| plantar flexion of the footh |
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Term
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Definition
| plantar flexion of the foot; origin-condycles of femor; insertion-calcaneous |
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Term
| three types of muscle tissue |
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Definition
| smooth, cardiac, skeletal; differ in structure location and means of activation |
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Term
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Definition
| myo, mys, and sarco; all refer to muscle |
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Term
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Definition
| walls of hollow organs, not striated, maintain blood pressure and propels substaances through organs |
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Term
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Definition
| contracts at steady rate set by hearts pacemaker; striated and involuntary; responsible for coursing blood through body |
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Term
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Definition
| striated and voluntary; contracts rapidly and tires easily; responsible for all locomotion; maintain posture; stabilize joints; generate heat |
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Term
| organizational layers of skeletal muscles |
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Definition
| epimysium; muscle; perimysium; fasicle; endomysium; fiber(cell); myofibril; myofiliment |
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Term
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Definition
| one nerve, artery and vein |
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Term
| indirect muscle attachment |
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Definition
| connective tissue wrappings extend beyond the muscle as a tendon or aponeurosis |
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Term
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Definition
| epimysium is fused to the perimysium of the bone |
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Term
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Definition
| smallest contractile unit of a muscle; region of a myofibril between 2 successive z discs; made up of myofiliments |
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Term
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Definition
| extend across i band and partway into a band; contains the active sites to which myosin heads attach during contraction; tropomyosin and troponin |
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Term
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Definition
| anchors the thin filaments |
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Term
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Definition
| extend the entire length of an a band; thick filaments; rodlike tail; two globular heads form cross bridge |
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Term
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Definition
| thin filaments do not overlap thick filaments |
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Term
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Definition
| elaborate endoplasmic reticulm; sorrounds each myofibril; paired terminale cisternae form perpendicular channels; functions in the regulation on intercellular calcium levels |
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Term
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Definition
| continuous with the sarcolemma; conduct impulses to the deepest regions of the muscle; signals for the Ca2+ release from adjacent terminal cisternae |
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Term
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Definition
| t tubules plus paired terminal cisternae |
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Term
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Definition
| actin filaments slide past myosin filaments; filaments overlap to a greater degree |
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Term
| in order to contract a skeltal muscle must |
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Definition
| be stimulated by a nerve ending; propagate an electrical current (action potential) along its sarcolemma; have a rise in intercellular Ca2+ levels |
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Term
| Nerve stimulus of skeltal muscle |
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Definition
| stimulated by motor neurons; axon forms neuromuscular junction; neuromuscular junction formed from axon terminal (ach)and sarcolemma (contains ach receptors) and synaptic cleft (small space between axon termial and sarcolemma) |
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Term
| propagation of an action potential along the sarcolemma |
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Definition
| when nerve impulse reaches the end of axon- ach is released in synaptic cleft, ach binds the sarcolemma to initiate action potential in the muscle |
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Term
| action potential in the muscle |
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Definition
| propagated along the sarcolemma; travels down t tubules; triggers Ca2+ release from terminal cisternae |
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