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Lab 8; Muscles

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cwilliford's version from 2016-11-14 15:56

Muscle Name; Origin; Incersion; Function

 

Question Answer Column 3 Column 4
TrapeziusOccipital bone, C7 and lumbar vertebraeScapula and clavicleExtends head; raises, rotates, adducts scapula
Latissimus DorsiLower 6 thoracic vertebrae, lumbar vertebrae, last 3-4 ribs, iliumhumerusAdducts and medially rotates arm
Levator ScapulaeC1-C4 vertebraescapulaElevates and adducts scapula, flexes neck to same side
DeltoidClavicle and scapulaHumerusArm abduction, aids in flex/exten/rotation of humerus
Sternocleidomastoid (humans)Sternum and ClavicleTemporal and Occipital BonesFlexion of neck forward, rotate head toward shoulder
Pectoralis MajorClavicle, sternum, ribs 1-6humerusRotates scapula, essential to raising arm, abduction of arm
Pectoralis MinorRibs 3-5ScapulaMoves scapula/ribs when opposite is fixed
Rectus AbdominusPubic BoneRibs 5-7Flexes and rotates vertebral column
Transversus AbdominusIliac, Last 5-6 ribs, lumbar fasciaPubis (pelvis)Compresses abdominal contents
External ObliqueLast Eight RibsPelvisCompresses abdominal wall, aids muscles in trunk rotation and lateral flexion
Internal ObliqueIlliumPubic crest, last three ribsCompresses abdominal wall, aids muscles in trunk rotation and lateral flexion
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