ANAT30007 Lecture Notes - Lecture 5: Rectus Abdominis Muscle, Thoracolumbar Fascia, Neural Tube
25 Jul 2018
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Document Summary
Newborn has a single curve in the spine, as weight-bearing increases, two curves to three curves finally as an adult. Pedicle and laminae connect to create vertebral (neural) arch successive vertebrae stack upon each other and this becomes the vertebral canal. Vertebral canal houses spinal cord and its protective/supportive structures. Lumbar vertebrae: 5 lumbar vertebrae - bigger and heavier than thoracic due to increased load, transverse processes do(cid:374)(cid:859)t have articular facets, have more freedom of movement. Sacral vertebrae and coccyx: coccygeal articular surface to attaches to pelvis with a small amount of movement to facilitate force distribution and dampening like the thoracic vertebrae and ribs, anterior/posterior openings are for spinal nerves. Blood supply for spinal cord and vertebrae is segmental and supplies other areas from this main highway. Run around spinal cord in fatty (protective) tissue. These veins are convergent from other veins in the (cid:271)od(cid:455) (cid:894)ple(cid:454)us(cid:895) e. g. i(cid:374) sa(cid:272)ru(cid:373) (cid:858)holes(cid:859)
