

P.V 



Fir.. 26. A mid-dorsal vertebra, showing markings on processes of the neural arch. C. capsule of costo-transverse joint ; 

 i, superior costo-transverse ligament ; 2.. 3, middle and posterior (external) costo-transverse ligaments; 4. origin of Levator 

 coste ; 5, intertransverse musculo-tendinous bands. The post-vertebral muscles occupy the vertebral groove. VG ; the 

 deepest of these are Rotatores spinse, KS, while the attachments of the more superficial muscles (Multifidus, Semi-spinalis. 

 and Spinalis dorsi on the spine) are indicated at PV. All these are covered by the aponeurotic sheets (apon.) of origin of 

 Trapezius, Latissimus, and vertebral fascia. 



irtt.isnrnan 

 "9 



TIG. 27. A mid-lumbar vertebra. In the upper figure observe that the mammillary process gives origin to Multifidus (i), while 

 the accessory process, further out, has Longissimus (2) attached to it. The post-vertebral muscles lie against the side 

 the spine, cover the lamina, and external to this lie on the transverse process and intertransverse structures and r 

 lamella of Transversalis. In the lower figure notice the division of the transverse process into two areas by insertion of 

 anterior lamella of Transversalis, with Quadratus lumborum, deep to this lamella, covering the process external to the line 

 and Psoas, superficial to the lamella, on the bone internal to the line. The tendinous origin of Psoas is marked at *. 

 lumbar vessels lie on the body between the origins of Psoas from it. 



