Lumbar spine O/I

Question 1

Multifidus

Answer 1

O: Sacrum, ilium (PSIS), and transverse processes of T1-T12, and articular process of C4-C7

I: Spinous processes of all vertebrae from L5-C2

Question 2

Erector spinae

Answer 2

O: Arise from broad thick tendon attached to the sacrum
Spinous processes of the lumbar and lower thoracic vertebrae
Iliac crest

I: Divde in the upper lumbar region into three vertical columns of muscle, each which is divided regionall depaending on it s superior attachments.

Question 3

Longissimus

Answer 3

O: Accessory processes and adjacent medial end of the dorsal surface of the transverse processes of lumbar vertebrae, iliu

I: Their tendons converge to form the lumbar intermuscular aponeurosis

Question 4

Iliocostalis lumborum

Answer 4

O: Sacrum, spinous processes of lumbar and lower two thoracic vertebrae and their supraspinous ligaments, and the iliac crest

I: Angles of the lower six or seven ribs