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Superficial back m.
| Question | Answer |
|---|---|
| Origin of Trapezius | external occipital protuberance, superior nuchal line, nuchal ligament, throacic vertebrae |
| Insertion of Trapezius | clavicle, spine & acromion of scapula |
| Innervation of Trapezius | Spinal accessory n. (CN XI) |
| Action of Trapezius | suspends shoulder, adducts scapula, rotates scapula |
| Blood Supply of Trapezius | transverse cervical artery |
| Origin of Latissimus dorsi | lower thoracic, lumbar & sacral vertebrae, lower ribs, ilium |
| Insertion of Latissimus | medial lip of the intertubercular groove of humerus |
| Innervation of Latissimus | thoracodorsal nerve |
| Action of Latissimus | extends, adducts & rotates arm medially |
| Origin of Levator Scapulae | upper cervical vertebrae |
| Insertion of Levator Scapulae | superior angle of scapula |
| Innervation of Levator Scapulae | dorsal scapular nerve |
| Action of Levator Scapulae | raises scapula |
| Origin of Rhomboid | upper thoracic vertebrae |
| Insertion of Rhomboid | medial border of scapula |
| Innervation of Rhomboid | dorsal scapular nerve |
| Action of Rhomboid | adducts & raises scapula |