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| 7682305142 | Three types of muscle tissues | -skeletal muscle -cardiac muscle -smooth muscle | 0 | |
| 7682305143 | Skeletal muscle | -usually attached to bone -voluntary -somatic -striated | 1 | |
| 7682305144 | Cardiac muscle | -wall of heart -involuntary -autonomic -striated | 2 | |
| 7682305145 | Smooth muscle | -walls of most viscera, blood vessels and skin -autonomic -not striated | 3 | |
| 7682305146 | Fascia | surrounds each muscle | 4 | |
| 7682305147 | Tendons | -extensions of the fascia beyond the muscle -attach muscle to bone | 5 | |
| 7682305148 | Aponeuroses | -fibrous sheets -attach to bone or coverings of adjacent muscles | 6 | |
| 7682305149 | Muscle coverings | -epimysium -perimysium -endomysium | 7 | |
| 7682305150 | Epimysium | surrounds whole muscle | 8 | |
| 7682305151 | Perimysium | surrounds fascicles within muscles | 9 | |
| 7682305152 | Endomysium | surrounds muscle fibers (cells) within fascicle | 10 | |
| 7682305153 | Muscle cell (fiber) | -formed from many undifferentiated cell -multinucleated muscle fiber | 11 | |
| 7682305154 | Sarcolemma | muscle cell membrane | 12 | |
| 7682305155 | Sarcoplasma | -cytoplasma -many nuclei -mitochondria -myofibrils | 13 | |
| 7682305156 | Myofibrils | -play a major role in muscle contraction -composed of overlapping protein filaments -Produces striations -broken into sarcomeres | 14 | |
| 7682305157 | Myosin | thick protein filament | 15 | |
| 7682305158 | Actin | thin protein filament | 16 | |
| 7682305159 | Functional unit of muscle contraction | sarcomeres | 17 | |
| 7682305160 | myofilaments in myofibril | Striaition pattern made by arrangement of ______ | 18 | |
| 7682305161 | I band | thin | 19 | |
| 7682305162 | A band | thick and thin | 20 | |
| 7682305163 | H zone | thick | 21 | |
| 7682305164 | Z line | or disc | 22 | |
| 7682305165 | M line | Sarcomere | 23 | |
| 7682305166 | Thick filaments | -myosin molecules -twisted protein strands called heads | 24 | |
| 7682305167 | Thin filaments | -double strand of actin -troponin -tropomyosin | 25 | |
| 7682305168 | Double strand of actin | each actin molecule has a binding site for the myosin head | 26 | |
| 7682305169 | Troponin | attached to actin and to tropomyosin | 27 | |
| 7682305170 | Tropomyosin | lie in grooves on the actin strand | 28 | |
| 7682305171 | Sarcoplasmic reticulum | network of membranous channels that surround the myofibril | 29 | |
| 7682305172 | Transverse T tublues | -invaginations of the SR that extend deep into the fiber -surrounded on either side by the cisternae | 30 | |
| 7682305173 | Cisternae | Enlarged portions of the sarcoplasmic reticulum | 31 | |
| 7682305174 | Contraction | -movement within the myofibrils -the actin and myosin filaments slide past one another -shortening the sarcomeres -muscles fibers shortens | 32 | |
| 7682305175 | Neurons | conduct action potentials (impluses) along axons to target organs | 33 | |
| 7682305176 | Synapse | the connection site between axon and target | 34 | |
| 7682305177 | neurotransmitters | Released at the synapse by the neuron | 35 | |
| 7682305178 | Motor nerons | transmit impulses to effector | 36 | |
| 7682305179 | Neuromuscluar Junction | site where an axon and muscle fiber meet (synapse) | 37 | |
| 7682305180 | Neuromusclar Junction parts | -motor neuron -motor end plate -synaptic cleft -synaptic vesicles | 38 | |
| 7682305181 | Motor end plate | special section of the sarcolemma | 39 | |
| 7682305182 | Synaptic cleft | gap between the neuron and the muscle fiber | 40 | |
| 7682305183 | Synaptic vesicles | -contain neurotransmitters -located at the end of the axon | 41 | |
| 7682305184 | Stimulus for contaction | acetylcholine (ACh) | 42 | |
| 7682305185 | synaptic vesicles | Nerve impulse causes release of ACh from _____ | 43 | |
| 7682305186 | motor end plate | ACh binds to ACh receptors on _______ | 44 | |
| 7682305187 | ACh generates a muscle impulse | muscle impulse eventually reaches the SR and the cisternae | 45 | |
| 7682305188 | Acetylcholine (ACh) | -neurotransmitter -released when an action potential reaches the end of the axon -diffuses in the synaptic cleft | 46 | |
| 7682305189 | ACh binds to ACh receptors on motor end plate | -generates an action potential on sarcolemma -action potential travels to the SR and the cisternae -causes Ca2+ to be releases into the fiber -Ca2+ stimulates the contraction | 47 | |
| 7682305190 | Muscle impulses | cause SR to release calcium ions into the muscle fiber | 48 | |
| 7682305191 | Calcium | binds to troponin to change its shape | 49 | |
| 7682305192 | pulls | The troponin _____the tropomyosin off the binding sites | 50 | |
| 7682305193 | Binding sites on actin are now exposed | myosin heads bind to actin, forming crossing-bridges | 51 | |
| 7682305194 | Antagonist | contratcion causes movement in the opposite direction of the prime mover | 52 | |
| 7682305195 | synergist | assist prime mover | 53 | |
| 7682305196 | Agonist | primarily responsible for movement | 54 | |
| 7682305197 | insertion | movable end | 55 | |
| 7682305198 | origin | immovable end | 56 |
