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Ch 8 Muscle

muscles

QuestionAnswer
Skeletal Muscle Tissue Fiber Cell, Voluntary control,striated,contracts quick tires easily, fragile
Myo,mya,Sacro- Muscle
Epimysium Wrapping for fibers
Fasicle bundle of fibers
Perimysium surrounds individual bundles of fibers
Endomysium covers each muscle/cell fiber
tendon muscle to bone
Sarcolemma Plasma membrane for muscle, separates outside from inside
Myofibril Rod; made up of repeating unit
Sacromere basic unit of contraction
Muscle functions movement,posture, stabilizing joints,generates heat..
Myofillaments Myosin(thick) & Actin(thin); protien molecules found in muscles
Myosin & Actin protein molecules found in muscles used for contractions
Sarcoplasmic Reticulium An endoplasmic reticulum that holds calcium...if this is released u get contractions if not released no contract
Muscle motor unit one motor neuron + muscle fibers
Neuromuscular Junction ur brain sends a signal to the neuron to contract
Vessicle Sac inside cell to move stuff around
Sliding Filament Model No calcium, myosin attacks the actin, to get protein to get muscle to contract ATP recharges Myosin
ATP ENERGY STORED used to recharge Myosin so Actin can use this to cause contractions in muscle
Calcium needed for muscle contractions
Energy stored ATP inside cells;create creatin phosphate
Anaerobic Respiration breaking/burn down sugar; no oxygen respiration that occurs without the use of oxygen
Aerobic Respiration Oxygen is required molecules of food are broken down to obtain energy
Isotonic contractions where the muscle does move. It shortens or lengthens during the exercise while the weight or resistance stays the same.
Isometric contractions where the muscle does not actually move. Pushing against a wall is an example. The muscle does not change length.
Atrophy Muscle wastes away; sacromeres break down
Fascia Layers of fibrous connective tissue
Created by: 1298518297
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