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Human Biology: The Muscular System Flashcards

Review of Chapter 30 of "Campbell Biology: Concepts and Connections" for Dr. Wojita's Human Biology class at OSU Marion

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859431840The skeletal muscle membranesAcetyl- choline1
859431841Invaginations of the cell membrane, on either side of the sarcomeresTransverse (T) tubules2
859431842Place in the muscle fiber where Ca++ ions are storedSarcoplasmic reticulum3
859431843The number of action potentials per second that are needed to be sent to a muscle to generate a smoother, stronger, full contraction as seen in fused muscular tetanusAround 100 per second Here all evidence of relaxation in the twitches summated ends, and a smooth full contraction is produced4
859431844The contractions used in everyday muscular movementsPositive contractions Negative Contractions Isometric Contractions5
859431845The contraction that shortens muscles and generates forcePositive Contraction6
859431846The type of respiration that is a larger producer of ATPaerobic7
859431847The contraction that lengthens muscles and generates forceNegative Contraction8
859431848The contraction that keeps the muscle the same length and generates forceIsometric Contraction9
859431849A muscle twitch is a result of thisOne action potential per second10
859431850The functional unit of a muscleSarcomere11
859431851If one desires more force in a muscle contraction, then he or she will...Recruit more motor units Bring all the motor units recruited to tetanus12
859431852The type of muscle fiber that would be found in large amounts in an endurance muscle like the soleus in the calf.Red, slow twitch Type I13
859431853The type of muscle fiber that would be found in large amounts in a quick muscles like the hands or eyeball muscles and in, powerful quick muscles like the gastrocnemius in the calf.White, fast twitch, Type 2b14
859431854These fibers are slow in contracting, have high amount of capillaries, store large amounts of myoglobin, specialize in aerobic metabolism, and have large and many mitochondria.Red, slow twitch Type I15
859431855These fibers have large diameter thick and thin myofilaments, ample enzymes for glycolysis, fast ATPase enzymes, store glycogen, specialize in anaerobic metabolism, and have large and are white-pink in color.White, fast twitch, Type 2b16
859431856In general, any type of cross bridge activity in the sarcomere can generate force, no matter is shorteing, lengthening or staying the same length.True17
859431857Thick myofilament cross bridges of the sarcomere are found on this protein.Myosin18
859431858During muscle contraction, thick myofilament cross bridges bind to this protein on the thin myofilament.Actin19
859431859When a muscle is relaxing, would Calcium, Ca++ levels, in the sarcomere be...Low20
859431860When a muscle is contracting, would Calcium Ca++ levels, in the sarcomere be...High21
859431861A motor unit made out of this.One motor neuron and all the muscle fibers it stimulates22
859431862Under 10 muscle fibers per unitprovides great dexterity and coordination23
859431863Hundreds of muscle fibers per motor unitprovides great force24
859431864This is another name for a muscle cellFiber25
859431865Skeletal muscle fibers have...More than one nucleus26
859431866The theory of muscle contractionSliding filament theory27

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