Shoulder region extrinsic Flashcards
rhomboid major origin
spinous processes of T2-T5
rhomboid major insertion
medial border of scapula from level of spine to the inferior angle
rhomboid minor origin
spinous processes of C7-T1
rhomboid minor insertion
medial border of root of the spine of scapula
innervation of rhomboid major and minor
Dorsal scapular nerve (C4, C5)
blood supply of rhomboid major and minor
dorsal scapular artery
rhomboid major and minor function
- retraction of scapula;
- rotation of scapula
levator scapulae origin
transverse processes of C1-C4
levator scapulae insertion
between superior angle and root of the spine of the scapula
levator scapula innervation
- cervical nerves C3-C4;
- dorsal scapular nerve C5
levator scapulae blood supply
- transverse cervical artery;
- ascending cervical artery;
- dorsal scapular artery
levator scapulae function
- elevate scapulae;
- tilt head
trapezius origin
- occipital bone;
- nuchal ligament;
- spinous processes of C7-T2 vertebrae
trapezius insertion
- lateral 1/3rd of clavicle;
- acromion;
- spine of scapula
trapezius innervation
- spinal root accessory nerve (CN XI motor); - cervical nerves C3+C4
trapezius blood supply
transverse cervical artery
trapezius function
- superior (descending) part elevates pectoral girdle;
- middle part retracts scapula;
- inferior (ascending) part depresses shoulders
latissimus dorsi origin
- inferior angle of scapula;
- thoracolumbar aponeurosis;
- iliac crest;
- spinous processes of T7-L5 vertebrae;
- inferior 3 or 4 ribs
latissimus dorsi insertion
floor of intertubercular sulcus
latissimus dorsi innervation
thoracodorsal nerve C6-C8 with C7 dominant
latissimus dorsi blood supply
thoracodorsal artery
latissimus dorsi function
- extension;
- medial rotation;
- adduction (together with teres major and pec major) of humerus
