Lumbar Extension Muscles Flashcards
Iliocostalis (origin)
Broad common tendon at post iliac crest
Post sacrum
SI ligament
Sacral and lower lumbar SPs
Iliocostalis (insertion)
Angles of lower ribs
(Posterior on the sharp ends of ribs)
Iliocostalis (action)
Extends and laterally bends vertebral column
Iliocostalis (nerve)
Dorsal rami of each region
Iliocostalis (blood)
Dorsal branches of lumbar arteries
Longissimus (origin)
Intermediate part of common tendon at post iliac crest
Longissimus (insertion)
Between tubercles and angles of ribs
Transverse processes of thoracic
Longissimus (action)
Extends and laterally bends vertebral column
Longissimus (nerve)
Dorsal rami of each region
Longissimus (blood)
Dorsal branches of posterior intercostal
Subcostal arteries
Spinalis (origin)
Intermediate part of common tendon at post iliac crest
Spinalis (insertion)
Spinous processes of the upper thoracic vertebrae
Spinalis (action)
Extends and laterally bends vertebral column
Spinalis (nerve)
Dorsal rami of each region
Spinalis (blood)
Dorsal branches of posterior intercostal
Subcostal arteries
Multifidi (origin)
Sacrum
Ilium
Multifidi (insertion)
Spinous processes of vertebrae above
Spanning 2 to 4 segments
Multifidi (action)
Stabilizes
Extension and rotation
Multifidi (nerve)
Dorsal rami of lumbar region
Multifidi (blood)
Dorsal branches of lateral sacral arteries
Rotatores (origin)
Transverse processes
Rotatores (insertion)
Lamina and spinous process of spine above
Spanning one or two segments
Rotatores (action)
Stabilizes, extends, and rotates spine
Rotatores (nerves)
Dorsal rami of spinal nerves
Rotatores (blood)
Dorsal branches of segmental arteries
