Lumbar spine

Question 1

which muscle stabilises the lumbar spine

Answer 1

transverse abdominis

Question 2

which muscle extends the lumbar spine

Answer 2

quadratos lumborum

Question 3

which muscle produces lumbar side flexion

Answer 3

external obliques 
internal obliques
rectus abdominis 
quadratus lumborum 
erector spinae

Question 4

what are the features of the lumbar vertebrae

Answer 4

mamillary process (on lamina) body, pedicle, transverse process, spinous process, lamina, inferior and superior articular process

Question 5

what are the features of an intervertebral disc

Answer 5

nucleus pulposus, peripheral annulus and vertebral end plates

Question 6

describe facet joints, note articulations, location and function

Answer 6

zygophaseal or apoophyseal synovial plane
Vertically orientated oval articular facets (1) covered in hyaline articular cartilage (1), inferior facets project anteriorly (1) to articulate with posterior facing superior facets (1).

Question 7

describe interspinous

Answer 7

between vertebrae

Question 8

list location and limits of supraspinous

Answer 8

limit flexion originates c7, terminates sacrum

Question 9

list lumbar movements

Answer 9

flexion/extension
side flexion
roation