Back Muscles Flashcards
Trapezius (Origin/Insertion)
Superior Nuchal line External Occipital protuberance Nuchal ligament SP C7-T12 \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Lateral 1/3 clavicle (superior) Acromion, Spine of Scapula (medial) Tubercle of inferior spine of scapula (inferior)
Trapezius (Innervation/Action)
Spinal Acessory n. (MOTOR)
Sensory C3-C4
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elevate, depress, retract the scapula
Trapezius BS
Superficial Branch of Transverse Scapular aa (branch of Subclavian aa)
Latissimus Dorsi (O and I)
SP T7-L5 Lower 3 or 4 ribs Thoracolumbar fascia Iliac Crest \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Humerus medial lip bicipital groove
Latissimus Dorsi (Innervation/Action)
Thoracodorsal n. (C6-C8) / extend, adducts, medially rotates humerus
Latissimus Dorsi BS
Thoracodorsal aa of subscapular aa
Levator Scapulae (O and I)
TP C1-C4 / Superior angle of Scapula (medial border)
Levator Scapulae (Innervation/Action)
Dorsal Scapular (C5) Cervical nerves (C3,C4) \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Elevates scapula (lift load)
Levator Scapulae BS
Dorsal Scapular aa
Rhomboid Major/Minor (O and I)
Major: Nuchal lig., SP T2-T5
Minor: Nuchal lig., SP C7-T1
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Medial border of scapula, inferior to spine
Rhomboid Major/ Minor (Innervation/Action)
Dorsal Scapular n (C4-C5)/ Stabilize, Retract, Elevate, & Internally Rotate Scapula
Rhomboid Major/Minor BS
Dorsal Scapular aa
Serratus Posterior Superior (O and I)
Ligament Nuchae
SP C7-T3
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External surface of 2nd to 5th ribs
Serratus Posterior Superior (Innervation/Action)
Anterior rami of 2nd to 5th thoracic nerves
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Elevate ribs (inspiration)
Serratus Posterior Superior BS
Dorsal branches of upper intercostal aa