Anatomy Muscles
Quiz by Nate Ritterbush
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52 questions
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- Q1Myofibrils are composed of ....FasiclesActin and ATPActin and MyosinOsteocyte and Myocyte120s
- Q2Rigor mortis that occurs after death is due tolack of ATPto much actinlack of actinto much ATP120s
- Q3This is an increase in the umber of motor units.synergistthreshold stimulusactivation energyrecruitment120s
- Q4Which of the following does not occur when a muscle undergoes atrophy?decrease in size of filamentsdecrease in mitochondriagain of fast twitch muscledecrease in capillaries120s
- Q5A muscle cramp is due to the lack ofADPK ionsATPNa ions120s
- Q6A partial but sustained contractiontwitchmuscle tonecrampatrophy120s
- Q7Where are vesicles with neurotransmitters stored?motor end platemitochondriaaxonmotor neuron endings120s
- Q8A muscle impulse travels across the sarcolemma and into the muscle fiber (cell) by means ofendoplasmic reticulumtransverse tubules (t tubules)mitochondriamotor end plate120s
- Q9Activities such as swimming and running would stimulate the development of what kind of fibers?slow twitchquickly fatiguedfast twitch120s
- Q10The amount of oxygen needed to convert lactic acid to glucose isacidosisoxygen debtanaerobic respirationaerobic respiration120s
- Q11Smooth muscle contracts ________________ compared to skeletal muscle?slowerfastervoluntarily120s
- Q12Multiunit smooth muscle is not which of the followingfound in blood vesselsinvoluntaryfound in sheetshas no rhythmicity120s
- Q13What is a sarcomere?a muscle cellfrom Z line to M linea functional unit of a musclea type of muscle120s
- Q14Actin has binding sites for....ATPNaCamyosin120s
- Q15An all or none response meansAll muscle fibers contract none of the timea muscle fiber can only contract fully or not at alla muscle fiber can contract partially if needed120s