Erector spinae group Flashcards
What is the origin of the iliocostalis (cervicis)?
ribs 3-6
What is the insertion of the iliocostalis (cervicis)
transverse processes (4-6 cervical vertebrae)
What is the action of the iliocostalis (cervicis)?
extension and lateral flexion of vertebral column
What muscle originates from ribs 3-6 and insert to transverse processes (4-6 cervical vertebrae)?
iliocostalis (cervicis)
What is the origin of the iliocostalis (thoracis)?
inferior 6 ribs angles
What is the insertion of the iliocostalis (thoracis)?
upper 6 ribs angles
What is the action of the iliocostalis (thoracis)?
extension and lateral flexion of vertebral column
What muscle originates from inferior 6 ribs angles and insert to upper 6 ribs angles?
iliocostalis (thoracis)
What is the origin of the iliocostalis (lumborum)?
iliac crest
What is the insertion of the iliocostalis (lumborum)?
lower 6-12 ribs angles
What is the action of the iliocostalis (lumborum)?
extension and lateral flexion of vertebral column
What muscle originates from iliac crest and inserts to lower 6-12 ribs angles?
iliocostalis (lumborum)
What is the origin of the longissimus (capitis, cervicis, thoracis)?
cervical, thoracic and lumbar transverse processes
What is the insertion of the longissimus (capitis, cervicis, thoracis)?
transverse processes of cervical or thoracic vertebrae, mastoid process of temporal bone
What is the action of the longissimus (capitis, cervicis, thoracis)?
extension of vertebral column and rotation of head
What muscle originates from cervical, thoracic, lumbar transverse processes and insert to transverse processes of cervical or thoracic vertebrae & mastoid process of temporal bone?
longissimus (capitis, cervicis, thoracis)
What is the origin of the spinalis (capitis, cervicis, thoracis)?
spinous processes of lower thoracic and upper lumbar vertebrae
What is the insertion of the spinalis (capitis, cervicis, thoracis)?
spinous processes of upper thoracic and cervical vertebrae
What is the action of the spinalis (capitis, cervicis, thoracis)?
extension of vertebral column
What muscle originates from spinous processes of lower thoracic and upper lumbar vertebrae and insert to spinous processes of upper thoracic and cervical vertebrae?
spinalis (capitis, cervicis, thoracis)
Name all 3 erector spinae muscles and their subdivisions.
iliocostalis (cervicis, thoracis, lumborum), longissimus (capitis, cervicis, thoracis), spinalis (capitis, cervicis, thoracis)