Term
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Definition
| compose myofibrils; actic and myosin; gives banding pattern |
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Term
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Definition
| thin, anchored to z lines of sacromeres |
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Term
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Definition
| thick; in middle of sacromere |
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Term
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Definition
| smallest contractile units of muscle; from z line to z line |
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Term
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Definition
| cell organelles; bundle of myofilaments; can see I bands, A bands, Z discs, H zone, and M lines |
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Term
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Definition
| cell organelles; bundle of myofilaments; can see I bands, A bands, Z discs, H zone, and M lines |
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Term
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Definition
| plasma membrane surrounding myofibrils |
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Term
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Definition
| connective tissue that surrounds each muscle cell (fiber) |
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Term
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Definition
| bundle of muscle fibers bound together by connective tissue |
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Term
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Definition
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Term
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Definition
| coarser, fibrous connective tissue enveloping bundles of muscle fibers (fascicles) |
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Term
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Definition
| many fascicels bound together by epimysium |
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Term
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Definition
| sheath of fibrous connective tissue around muscle |
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Term
| Order from small to large of coverings |
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Definition
| endomysium, perimysium, epimysium |
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Term
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Definition
| actin only; includes z disc in the middle; actin from 2 sarcomers |
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Term
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Definition
| full length of myosin; includes overlap of actin on both ends of myosin |
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Term
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Definition
| Actin anchored to these; midline interruption of I bands; boundary of sarcomeres |
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Term
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Definition
| aka 'bare zone'; myosin only; disappears during contraction |
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Term
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Definition
| center of H zone; only myosin; tiny protein rods hold adjacent myofilaments togerher |
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Term
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Definition
| closes jaw by elevating mandible |
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Term
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Definition
| raises and protrudes lower lip |
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Term
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Definition
| closes lips, protrudes lips, shapes lips during speech |
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Term
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Definition
| closes eyes, squinting, blinking |
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Term
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Definition
| raises eyebrows and skin of forehead |
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Term
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Definition
| pulls scalp posteriorly, connects to frontalis |
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Term
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Definition
| pulls corners of mouth down |
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Term
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Definition
| SCM; rotates head toward opposite side, neck flexion when both SCM activated |
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Term
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Definition
| adduction of shoulder, horizontal adduction of shoulder, and internal rotation of shoulder |
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Term
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Definition
| moves scapula anteriorly, elevates ribs during breathing |
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Term
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Definition
| depresses the ribs during exhalation and elevates the ribs during inhalation |
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Term
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Definition
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Term
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Definition
| rotates trunk, flexes trunk |
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Term
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Definition
| abducts the shoulder, also flexes, extends, internally rotates and externally rotates the shoulder |
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Term
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Definition
| * flexes the elbow, supinates forearm, flexes shoulder |
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Term
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Definition
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Term
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Definition
| * extends elbow, extends shoulder |
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Term
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Definition
| internally rotates shoulder |
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Term
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Definition
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Term
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Definition
| externally rotates shoulder |
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Term
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Definition
| externally rotates shoulder, extends shoulder |
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Term
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Definition
| internally rotates shoulder, extends shoulder |
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Term
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Definition
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Term
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Definition
| adducts/ retracts scapula |
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Term
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Definition
| adducts/ retracts scapula |
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Term
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Definition
| rotates scapula, protracts scapula |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| flexes wrist, adducts wrist |
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Term
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Definition
| * flexes wrist, flexes fingers |
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Term
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Definition
| flexes wrist, abducts wrist |
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Term
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Definition
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Term
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Definition
| extends wrist, adducts wrist |
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Term
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Definition
| * extends wrist and extends fingers |
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Term
| Extensor Carpi Radialis Longus |
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Definition
| extends wrist, abducts wrist |
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Term
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Definition
| extends neck, elevates, depresses, rotates, adducts, and stabilizes scapula |
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Term
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Definition
| extends humerus, adducts humerus (swimming) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| abducts hip, stabilizes pelvis during gait |
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Term
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Definition
| TJL; abducts hip, flexes hip |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| * flexes hip, extends knee |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| * adducts hip, flexes knee |
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Term
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Definition
| * flexes hip, flexes knee, externally rotates hip |
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Term
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Definition
| * extends hip, flexes knee |
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Term
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Definition
| * extends hip, flexes knee |
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Term
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Definition
| * extends hip, flexes knee |
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Term
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Definition
| * plantarflexes ankle, flexes knee |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| * everts ankle, plantarflexes ankle |
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Term
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Definition
| everts ankle, plantarflexes ankle |
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Term
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Definition
| dorsiflexes ankle, inverts ankle |
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Term
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Definition
| ACH; specific neurotransmitter that stimulates muscle; travels across synaptic cleft and binds to receptors on muscle sarcolemma |
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Term
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Definition
| state of continuous partial muscle contraction stimulated by nervous system |
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Term
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Definition
| place of attachment of muscle to more stationary bone; immovable or less movable |
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Term
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Definition
| place of attachment of a muscle to bone that it moves |
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Term
| 4 Properties of Muscle Tissue |
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Definition
| excitability, contractility, extensibility, elasticity |
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Term
| 5 Skeletal Muscle Functions |
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Definition
| produce movement, posture, stabilize joints, generate heat, assist cardiovascular system with blood circulation |
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Term
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Definition
| sagittal plane movement; angle between bones is decreased |
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Term
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Definition
| sagittal plane movement; angle between bone is increased |
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Term
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Definition
| coronal plane movement; body part moves away from midline |
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Term
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Definition
| coronal plane movement; body part moves toward midline |
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Term
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Definition
| movement of limb around longitudinal axis; left and right (spine); external and internal (hip and shoulder) |
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Term
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Definition
| combination of flexion/extension and abduction; usually at should and hip and thumb; proximal end of bone is stationary while distal end moves in circle |
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Term
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Definition
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Term
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Definition
| downward movement of ankle |
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Term
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Definition
| sole of foot turns to medial |
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Term
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Definition
| sole of foot turns to lateral |
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Term
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Definition
| forearm rotates laterally (palm upward) |
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Term
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Definition
| forearm rotates medially (palm downward) |
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Term
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Definition
| thumb in contact with fingers on same hand |
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Term
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Definition
| forward movement in sagital plane (extends length) |
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Term
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Definition
| backward/posterior movement in sagital plane (shortens length) |
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Term
| Naming Muscles Based On Direction of Muscle Fibers |
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Definition
| Rectus=straight/parallel; Oblique=at an angle |
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Term
| Naming Muscles Based On Muscle Location |
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Definition
| Ulnaris= near ulna; Temporalis= near temporal bone; Tibialis=near tibia |
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Term
| Naming Muscles Based On Number of Origins |
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Definition
| Biceps, Triceps, Quadriceps, etc |
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Term
| Naming Muscles Based On Size of Muscle |
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Definition
| maximus, medius, minimus; major, minor; longus, brevis |
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Term
| Naming Muscles Based On Action of Muscle |
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Definition
| flexor, extensor, adductor, etc |
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Term
| Naming Muscles Based On Shape of Muscle |
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Definition
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Term
| Circular Arrangement of Muscle Fibers |
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Definition
| concentric rings; sphincters |
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Term
| Convergent Arrangement of Muscle Fibers |
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Definition
| muscle of fascicles converge toward single tendon for insertion; Pectoralis major |
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Term
| Parallel Arrangement of Muscle Fibers |
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Definition
| fascicles run parallel to length of muscle; Sartorius |
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Term
| Fusiform Arrangement of Muscle Fibers |
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Definition
| parallel arrangement with thick middle that fuses on end; biceps brachii |
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Term
| Pennate Arrangement of Muscle Fibers |
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Definition
| feather like; fans off central tendon; uni=extensordigitorum longus; bi=rectus femoris; multi=deltoid |
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Term
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Definition
| Internal Shoulder Rotation (Subscapularis); External Shoulder Rotation (Supraspinatus, infraspinatus, teres minor) |
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Term
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Definition
| Knee Flexion and/or Hip Extension (biceps femoris, semimembranosus, semitendinosus) |
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Term
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Definition
| knee extension (vastus medius, vastus intermedius, vastus lateralis, rectus fermoris); Hip Flexion (rectus femoris) |
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Term
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Definition
| plantar flexion (soleus, gastrocnemius); knee flexion (gastrocnemius); all connect to form attachment to calcaneus (achilles tendon) |
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Term
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Definition
| stretching or tearing of a muscle |
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Term
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Definition
| stretching or tearing of a tendon or ligament |
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Term
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Definition
| neuromuscular junction disease; ACH receptors blocked; auto immune disease; muscle fatigue, slurred speech, swallowing problems, drooping eyelids, shortness of breath |
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Term
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Definition
| congenital disease; muscle fibers enlarge, degenerate, and atrophy; Duchennes MD is most common (only in males) |
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