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Back Muscles

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buwaxayo's version from 2018-01-26 09:01

Trapezius

Question Answer
Trapezius [upper] (origin)external occipital protuberance; superior nuchal line
Trapezius [upper] (insertion)posterior border of clavicle
Trapezius [middle] (origin)C6-T3
Trapezius [middle] (insertion)acromion
Trapezius [lower] (origin)T4-T12
Trapezius [lower] (insertion)spine of scapula
InnervationSpinal Accessory Nerve
memorize

Latissimus Dorsi

Question Answer
Latissimus Dorsi (origin)T7-L5; iliac crest; lower 4 ribs
Latissimus Dorsi (insertion)intertubercular sulcus of humerus
Innervationmiddle and long subscapular nerve
memorize

Levator Scapulae

Question Answer
Levator Scapulae (origin)tp C1-C4
Levator Scapulae (insertion)superior vertebral border of the scapula
InnervationC3-C5 (dorsal scapular nerve)
memorize

Rhomboids

Question Answer
Rhomboid Minor (origin)sp C7-T1
Rhomboid Minor (insertion)vertebral border of scapula above spine
Rhomboid Major (origin)sp T2-T5
Rhomboid Major (insertion)vertebral border of scapula below spine
InnervationC4-C5 (dorsal scapular nerve)
memorize

Serratus Muscles

Question Answer
Serratus Posterior Superior (origin)sp C7-T3
Serratus Posterior Superior (insertion)upper border of ribs 2-5
Serratus Posterior Inferior (origin)sp T12-L3
Serratus Posterior Inferior (insertion)lower border of ribs 9-12
Innervation SPST1-T4
Innervation SPIT9-T12
memorize