Multifidus Flashcards
1
Q
origin
A
- posterior surface of sacrum
- posterior sacroiliac ligament
- mammillary processes LV
- TPs of TV
- articular processes C4-C7
2
Q
insertion
A
spines of vertebrae 2-4 segments superior to origin
3
Q
innervation
A
dorsal rami all spinal nerves
4
Q
blood supply
A
- posterior intercostal arteries
- posterior lumbar arteries
- cervical branch of costocervical trunk
5
Q
actions
A
- extension, lateral flexion, & rotation of vertebral column
- extension & lateral motions of pelvis