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90 Cards in this Set
- Front
- Back
Refers to the movement resulting from the contraction of smooth muscles
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Internal Mobility
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Skeletal Muscles Create visable movement (motion and locomotion)
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External Mobility
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All muscle contractions produce and release _____ .
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Heat
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Voluntary, striated muscle
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Skeletal Muscle
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AKA muscle cells, threadlike, slender shape, usually run the length of the muscle....
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Muscle fibers
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_______ are very fine longitudinal fibers, consisting of thick and thin myofilaments.
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Myofibrils
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Groups of muscle fibers bound by perimysium
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fasciculi
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Term referring to skeletal muscles and related fascia.
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Myofascial
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When organization of deep fascia forms a cord, anchoring the ends of muscle to bone, it is called a _________.
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tendon
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A broad, flat tendon that attaches skeletal muscle to bone, another muscle, or skin.
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aponeurosis
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Retaining bands of connective tissue around the elbows, knees, ankles, and wrists.
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Retinacula
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The cell membrane that encases the cytoplasm and organelles.
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sarcolemma
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The cytoplasm, surrounds the organelles.
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sarcoplasm
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A fluid filled system of cavities that contain sarcomeres.
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sarcoplasmic reticulum
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_____ spread the nerve inpluse by transporting stored ions into and out of the cell.
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T-tubules
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The proteins actin, myosin, tropomyosin, troponin make up _______.
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Myofilaments
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Shaped like golf clubs.
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Myosin molecules
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Muscles contractile unit.
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Sarcomeres
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Ends of the sarcomere.
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Z-line
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Center of sarcomere, myosin only
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H-band
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Actin and myosin overlapping
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A-band
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Actin only
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I-band
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Ability to respond to a stimulus
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Excitability
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Ability of a muscle to shorten
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Contractility
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Ability of a muscle to lengthen.
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Extensibility
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Ability of muscle fibers to return to their original shape after movement.
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Elasticity
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A neuron responsible for sending impluses to the muscle cell, messages of contraction.
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motor neuron
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A single motor neuron plus all the muscle fibers to which it attaches
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motor unit
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The junction between the motor neuron and the motor end plate
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neuromuscular junction
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The principal neurotransmitter involved in muscle contraction
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acetylcholine (ACh)
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Theory of muscle contraction
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sliding filament theory
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Muscles contract to their fullest extent or not at all.
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all-or-none response
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Motor unit activation based on need.
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recruitment
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.The energy needed for muscle contraction comes from a compound called
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adenosine triphosphate (ATP)
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Skeletal muscle contraction requires to essential ingredients:
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Glucose and oxygen.
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The wide central portion of a muscle that produces movement of the joint
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Belly
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The attachment of the muscle on the less moveable bone, usually located medial or proximal
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Origin
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The attachment of the muscle on the more movable bone, usually located lateral or distal.
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Instertion
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Muscles that cross one joint
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Uniarticular
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Muscles that cross two joints.
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Biarticular
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Muscles that cross more than two joints.
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Multiarticular
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A muscle fiber arrangement that can be quadrilater or triangular.
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Parallel
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This muscle hape is called fusiform and converges and one or both ends.
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Convergent
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A muscle fiber arrangement that is circular. (hello.)
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Circular
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This muscle hape is called fusiform and converges and one or both ends.
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Convergent
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A muscle fiber arrangement that is circular. (hello.)
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Circular
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Short muscles arranged with a central tendon, feather like appearance
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Pennate
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Muscle causing a specific action.
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Agonist
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Muscle opposing the agonist.
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Antagonist
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Muscle aiding by causing same movement as the agonist.
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Synergist
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Muscle acting as joint stabilizer so agonist can exert it's actions.
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Fixators
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AKA red muscle, fatigue resistant, react at a slow rate.
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Slow twitch
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AKA white muscle, largest diameters, appear white.
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Fast twitch
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AKA pink muscle, inbetween slow and fast twitch.
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Intermediate
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The opposite of muscular contraction.
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Stretching
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Flexability beyond a joints normal range of motion, contributes to joint instability.
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Hyperflexibility
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Receptors that detect tension applied to the tendon during a stretch.
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Golgi tendon organs
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Muscle tension remains the same as length of muscle changes.
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Isotonic Contraction
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Shortening of the muscle. Accelerators, spurt muscles.
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Concentric Contraction
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Lengthening contractions, decelerators, shunt muscles.
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Eccentric Contraction
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Muscle length remains the same, muscle tension increases.
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Isometric Contraction
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Maintining an optimal body position.
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Posture
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Less muscle tone than normal.
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flaccid
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More muscle tone than normal.
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spastic
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A decrease in the size of muscle fibers.
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Atrophy
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Muscle is fixed in flexed position.
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contracture
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Type of tendonitis caused by narrowing of the tendon sheath.
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De Quervain's Tendonitis
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A chronic infammatory disease that affects muscle and related connective tissues, pain.
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Fibromyalgia
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A benign tumor on a tendon.
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Ganglion Cyst
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Types include muscular contraction, tension, vervicgenic, sinus, migrane, etc...
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Headaches
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A rigid knot in the muscle.
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Muscle Spasm
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The atrophy of skeletal muscles with no indication of damage.
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Muscular Dystrophy
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Pain in the heel, inflammation of the plantar fascia.
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Plantar Fascitis.
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Carpal Tunnell, thoracic outlet, tennis elbow, rotator cuff problems.
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Repetitive Strain Injury
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Strain of posterior tibial muscles marked by pain along the shinbone.
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Shin Splints
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Increased muscle tone and stiffness, increase in tendon reflexes.
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Spasticity
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Injury of a muscle or tendon caused by a violent contraction, forced stretching, or synergistic failure.
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Strain
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Inflammation of the tendon accompanied by pain and swelling.
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Tendinitis
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Spasms of the sternocleidomastoid muscles (SMC'S).
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Torticollis
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Chordlike structure attaching muscle to bone.
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Tendon
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Thick Myofilament
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Myosin
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Fascial covering of the entire muscle
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Epimysium
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Muscle of the heart.
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Cardiac
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Thin myofilament
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Actin
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Principal Neurotransmitter involved in muscle contraction.
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Acetylecholine
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Cell membrance of a muscle fiber.
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Sarcolemma
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Lengthening contractions.
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Eccentric
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Detects sudden motion causing reflexive muscle contraction.
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Muscle Spindles
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Junction between a motor neuron and a motor end plate.
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Neuromuscular Junction
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Proteins that prevent muscles from being in a constant state of contraction.
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Troponin and tropomyosin
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