Lumbar Extension - Erector Spinae Flashcards
Iliocostalis (origin) (most lateral, ILS)
broad common tendon at posterior iliac crest, sacrum
Iliocostalis (insertion)
angles of lower ribs
Iliocostalis (action)
extends and laterally bends vertebral column
Iliocostalis (innervation)
dorsal rami
Iliocostalis (blood supply)
dorsal branches of lumbar arteries
Longissimus (origin) (middle, ILS)
broad common tendon
Longissimus (insertion)
between tubercles and angles of ribs, transverse processes of thoracic vertebrae
Longissimus (action)
extends and laterally bends the vertebral column
Longissimus (innervation)
dorsal rami
Longissimus (blood supply)
dorsal branches of posterior intercostal/subcostal arteries
Spinalis (origin) (most medial, ILS)
broad common tendon
Spinalis (insertion)
spinous processes of upper thoracic vertebrae
Spinalis (action)
extends and laterally bends vertebral column
Spinalis (innervation)
dorsal rami
Spinalis (blood supply)
dorsal branches of posterior intercostal/subcostal arteries
