ANTERIOR AXILLARY WALL-PECTORALIS MAJOR
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SUMMARY
1. Origin (O): clavicular head - sternal half of clavicle. Sternal head - sternum down to 7th rib, cartilages of true ribs & aponeurosis of EXTERNAL OBLIQUE.2. Insertion (I): lateral lip of intertubercular sulcus of humerus (TIP: 1 missus [LATISSIMUS DORSI] b/w 2 majors [PECTORALIS MAJOR & TERES MAJOR])
3. NS: medial & lateral pectoral n.
4. A: adducts & internally rotates arm; flexes shoulder.
Image: Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/ [Accessed 15 Nov. 2018].
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.
