Major Deep Intrinsic Back Muscles Flashcards
1
Q
3 muscles of transversospinalis
A
semispinalis, multifundus, rotatores
2
Q
semispinalis
A
O:
- transverse process C4-T12
I:
- occipital bone
- cervical + thoracic spinous process
N:
- posterior rami of spinal nerve
A:
- extension of head
- contralateral rotation
3
Q
multifundus
A
O:
- posterior sacrum
- posterior iliac spine
- aponeurosis of erector spinae
- sacro-iliac ligament
- mammillary porcesses of lumbar vertebrae
- transverse processes T1-T3
Articular process of C4-C7
I:
- entire length of spinous processes
N:
- posterior rami of spinal nerves
A:
- stabilize vertebrae during local movement of vertebral column
4
Q
rotatores
A
O:
I:
N:
A:
