Muscle Groups - SEER Training

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Muscle Groups · Size: vastus (huge); maximus (large); longus (long); minimus (small); brevis (short). · Shape: deltoid (triangular); rhomboid (like a rhombus with ... Home  » CancerRegistration&SurveillanceModules  » Anatomy&Physiology  » MuscularSystem  » MuscleGroups SectionMenu CancerRegistration&SurveillanceModules Site-specificModules Resources ArchivedModules Updates Acknowledgements MuscleGroups Therearemorethan600musclesinthebody,whichtogetheraccountforabout40percentofaperson'sweight. Mostskeletalmuscleshavenamesthatdescribesomefeatureofthemuscle.Oftenseveralcriteriaarecombinedintoonename.Associatingthemuscle'scharacteristicswithitsnamewillhelpyoulearnandrememberthem.Thefollowingaresometermsrelatingtomusclefeaturesthatareusedinnamingmuscles. Size:vastus(huge);maximus(large);longus(long);minimus(small);brevis(short). Shape:deltoid(triangular);rhomboid(likearhombuswithequalandparallelsides);latissimus(wide);teres(round);trapezius(likeatrapezoid,afour-sidedfigurewithtwosidesparallel). Directionoffibers:rectus(straight);transverse(across);oblique(diagonally);orbicularis(circular). Location:pectoralis(chest);gluteus(buttockorrump);brachii(arm);supra-(above);infra-(below);sub-(underorbeneath);lateralis(lateral). Numberoforigins:biceps(twoheads);triceps(threeheads);quadriceps(fourheads). Originandinsertion:sternocleidomastoideus(originonthesternumandclavicle,insertiononthemastoidprocess);brachioradialis(originonthebrachiumorarm,insertionontheradius). Action:abductor(toabductastructure);adductor(toadductastructure);flexor(toflexastructure);extensor(toextendastructure);levator(toliftorelevateastructure);masseter(achewer). «Previous(MuscleTypes)Next(HeadandNeck)» ^ Back toTop



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