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26 Cards in this Set
- Front
- Back
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Names of proteins that make up thin filaments and thick filaments |
Actin troponin and tropomyosin- thin filaments Myosin- thick filaments |
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Three types of muscle fibers |
Slow twitch, fast twitch glycolytic, and fast twitch fatigue resistance |
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————— allows for a quick conversion of ADP to ATP. |
Creative phosphate |
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Cross bridging occurs between the heads on the __________ protein and the binding sites on the _______ protein. |
Myosin Actin |
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A world class sprinter has more of what type of fiber in his/her legs? |
Fast twitch gycolytic |
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How about a long distance runner? |
Slow twitch fiber |
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_______ is a muscular disease where the acetylcholine receptors are being attacked by one’s immune system |
Myasthenia gravis |
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What muscle group is around the mouth |
Orbicularis oris |
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The main muscular neurotransmitter is _____________ and the enzyme that decomposes this molecule is ________. |
Acetylcholine Acetylcholinesterase |
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Which fibers are the reddest and why are they redder than other fibers? |
Slow twitch fibers They have better blood supply and more myoglobin |
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What muscle forms the calf of the lower leg |
Gastrocnemius |
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________ binds to troponin, which moves the _____ out of the way to expose the actin binding sites |
Ca+, tropomyosin |
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Which fibers rarely need to utilize anaerobic respiration for energy and why |
Slow twitch- they are smaller, use less oxygen , have more myoglobin |
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What is the name of fibrous bands of connective tissue found in the abdomen and the top of the head |
Aponeuroses |
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_____ ach binds to ach receptors _____ a nerve impulse travels down a motor neuron axon _____ the motor neuron terminal releases ach _____ actin and myosin form linkages |
3,1,2,4 |
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Give the three fibers in order from biggest to smallest in diameter |
Fast glycolytic, fast fatigue resistant, slow twitch |
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What muscle is triangular shaped on the back |
Trapezius |
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List the bundle order from micro to macro |
Thick/thin filaments, myofibrils, muscle fibers, fascicles , muscle |
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List the muscle coverings from micro to macro |
Endomysium, perimysium, epimysium, fascia |
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The ability to activate more motor units for a job is called motor ________. |
Recruitment |
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The ____ is the movable end of a muscle, and the _____ is the immovable end. |
Insertion, origin |
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What makes up the triad in skeletal muscle cells |
Sarcoplasmic reticulum, transverse tubules, cisternae |
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A ______ contraction is a lengthening contraction |
Eccentric |
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A _____ contraction is a shortening contraction |
Concentric |
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A _______ contraction is where the muscle does not change length |
Isometric |
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The _____ is the minimum amount of energy required to cause a contraction |
Threshold stimulus |
