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PETH 410 Midterm

Flashcard-style Q&A on muscle structure, training, physiology, strength, endurance, cardiovascular health, and physical activity from chapters in a health or exercise science course.

Alice Edwards
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Martin1st half of chapter one1.What is smooth muscle sometimes called?a. Involuntary muscle2.What is the muscle under conscious control called?a. Skeletal muscle3.What covers the Muscle Fibrea.Endomysium4.Where are the transverse Tubles found?a. The sarcoplasm5.What is the basic functional unit of a myofibril and the basic contractile unit of muscle?a.Sacromere6. What is Nebulin?a.An anchoring protein for actin7.What is considered sometimes as the third myofilamenta.Titin8.What is a a-motor neuron?a.is a nerve cell that connects with and controls many muscle fibers9.A singlea-motor neuron and all the muscle fibers it directly signals are collectivelytermed aa. Motor Unit10. What is the is the theory called for how muscles create movement?a. Sliding filament theoiyAaron2nd half of Chapter one (make the question easy)1.Type 1 and Type 2 muscle fibres differ in theirof contraction. (Speed)2.What enzyme splits ATP to release energy to drive contraction? (myosin ATPase)3.In which type of muscle fiber do cross-bridges cycles occur rapidly ? (Type 2)4.Method of identifying fiber types by chemically separating different types of myosinmolecules (isoforms). (Gel electrophoresis)5.Slow Twitch, Slow Oxidative. (Type 1)6.Why are Type 2 fibres more adept to deliver calcium into the muscle cell whenstimulated? (More highly developed Sarcoplasmic reticulum)7.Titin centers what in the sarcomere and prevents them from overstretching? (Thickfilaments)8.Titin is the third sarcomere myofilament and contributes to? (Force production duringand following eccentric contraction)9.Titin acts as agreatly increasing its stainless and thus force. (Molecular spring)10. Which motor unit has a smaller cell body? (Type 1)11. When a Type 1 alpha motor neuron stimulates its fibers, fewer muscle fibers contractthan when a type 2 motor neuron stimulates its fibers? (True)12. Anns and legs do not have similar fiber compositions (False)

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