+ 
308 THE MUSCULAR SYSTEM. 
wards, its fibres converging to the lower angle of the scapula. In relation to its 
superior and external borders, additional fibres arise. (2) Along the outer border 
muscular slips arise from the lower three or four ribs, interdigitating with the 
e tidy | ii) 
\ ANE) Wy Wf) Wy Wy Hh 
ANS 
y Li 
j 
if 
Pi) 
Uy 
Uf 
FT, 
CoMPLEXUS y i 
STERNO-MASTOID —STERNO-MASTOID 
SPLENIUS CAPITIS 
SPLENIUS COLLI 
SERRATUS POSTICUS SUPERIOR 
LEVATOR ANGULI SCAPULE-— 
TRAPEZIUS 
RHOMBOIDEUS MINOR 
RHOMBOIDEUS y* EE | 
MAJOR 92 
= YY, ) —= 
TRAPEZIUS ——gaeore Ji me. = 
i) 
( ‘4 RHOMBOIDEUS 
\ a , ij MAJOR 
z ‘ 
YE} Mi} TERES MAJOR 
- WE) 
LATISSIMUS , 
DORSI 
LATISSIMUS DORSI 
SERRATUS POSTICUS 
INFERIOR 
OBLIQUUS EXTERNUS 
ABDOMINIS 
OBLIQUUS EXTERNUS 
ABDOMINIS 
OBLIQUUS INTERNUS 
Il ; 
Gluteal fascia 
Fascia over gluteus 
maximus (cut along upper 
border of the muscle) , 
Fascia over gluteus_ 
maximus 
ely 6 Pe _ sm eye ep ae Py al 
GLUTEUS MAXIMUS 
Fic. 231.—SUPERFICIAL MUSCLES OF THE BACK. 
origins of the obliquus externus abdominis. (3) As the upper border of the muscle 
passes horizontally over the lower angle of the scapula, an additional fleshy slip 
usually takes origin from the bone to join the muscle on its deep surface. 
Beyond the lower angle of the scapula the latissimus dorsi, greatly narrowed, 
curves spirally round the teres major muscle, and forms the prominence of the 
posterior axillary fold. It ends in a ribbon-like tendon, closely adherent at first to 
the teres major, which is inserted into the floor of the bicipital groove of the 
