Muscles of the Intermediate Intrinsic Back Flashcards
Insertion of the Iliocostalis Cervicis
Transverse processes of C4-C6
Origin of Iliocostalis Thoracis
Ribs 7-12
Insertion of Iliocostalis Thoracis
Ribs 1-6
Origin of Iliocostalis Lumborum
Sacrum, iliac crest, and thoracolumbar fascia
Insertion of Iliocostalis Lumborum
Ribs 6-12, thoracolumbar fascia, transverse processes of upper lumber vertebrae
Innervation of the Iliocostals
Spinal nerves C8-L1 (posterior rami)
Action of iliocostals
Bilaterally: extends the spine
Unilaterally: bend the spine laterally to the same side
Origin of the Longissimus capitis
transverse process of T1-T3
transverse/articular processes of C4-C7
insertion of longissimus capitis
mastoid process of temporal bone
Origin of longissimus cervicis
transverse processes of T1-T6
Insertion of longissimus cervicis
transverse processes of C2-C5
origin of longissimus thoracis
sacrum, iliac crest, spinous processes of lower thoracic vertebrae
insertion of longissimus thoracis
ribs 2-12, transverse processes of lumbar vertebrae, and costal process of the thoracic vertebrae
Innervation of longissimus
C1-L5 posterior rami, lateral branches
Action of the longissimus
Bilaterally: extend the head
Unilaterally: flex and rotate the head to the same side
Origin of the spinalis cervicis
spinous processes of C5-T2
insertion of the spinalis cervicis
spinoust processes of C2-C5
origin of the spinalis thoracis
spinous processes and lateral surface of T10-L3
insertion of the spinalis thoracis
spinous process and lateral surface of T2-T8
Innervation of the Spinalis
dorsal rami
actions of the spinalis
bilaterally: extend the cervical and thoracic spine
unilaterally: bend cervical and thoracic spine to the same side
Origin of the Iliocostalis Cervicis
Ribs 3-7
