Spine Muscles Flashcards
Iliocostalis attach (Erector spinae group)
TFL attaches to sacrum Iliac crest Spinous processes L5-T11 Supraspinous lig. angle of ribs to costal angles
Longissimus attach (Erector spinae group)
TFL attaches to sacrum Iliac crest Spinous processes L5-T11 Supraspinous lig. Ribs and transverse processes
Spinalis attach (Erector spinae group)
TFL attaches to sacrum Iliac crest Spinous processes L5-T11 Supraspinous lig. Spinous processes
Erector spinae innervation
Illiocostalis, longissimus, spinalis
Dorsal rami of spinal nerves
Semispinalis capitis, spinalis cervicis, spinalis thoracis (Erector spinae group) actions
Extension,
Lat. flex of vertebral column
Longissimus capitis, longissimus cervicis, longissimus thoracis action
Extension
Lateral flexion of vertebral column
Iliocostalis cervicis, iliocostalis thoracis, iliocostalis lumborum action
Extension
Lateral flexion of vertebral column
Semispinalis (transversospinales group) attachments
Semispinalis capitis, cervicis, thoracis
Transverse processes to distant superior processes
Semispinalis (transversospinales group) actions
Semispinalis capitis, cervicis, thoracis
Extension
Contralateral rotation of vertebral column
Multifidus (transversospinales group) attachments
Sacrum, posterior SI lig., posterior iliac spine, transverse processes
More superior spinous processes
Multifidus (transversospinales group) actions
Extension
Contralateral rotation of vertebral column
Rotatores longus & brevis attachments (transversospinales group)
Transverse process to spinous process of vertebral above 1-2 levels
Rotatores longus & brevis (transversospinales group) actions
Extension
Contralateral rotation of vertebral column
Interspinales attachments
Between spinous processes of adjacent vertebrae
Interspinales actions
Extension of spine