Erector Spinae (Sacrospinalis) Flashcards
Which muscles represent the fourth layer of the true back?
Erector spinae or sacrospinalis muscles
Which muscles are identified as erector spine or sacrospinalis muscles?
(3)
Iliocostalis
Longissimus
Spinalis
What muscles are classically identified as iliocostalis muscles?
(3)
Iliocostalis lumborum
Iliocostalis Thoracis
Iliocostalis Cervicis
What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum?
(4)
Spinous processes of T11-T12, L1-L5
Median sacral crest
Lateral sacral crest
Contraction of iliocostalis lumborum will result in what movements?
Extension, lateral flexion and rotation of lumbar spine
Lateral pelvic movement
What osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?
NONE
What is the insertion for the iliocostalis thoraces?
2
Costal angles of the upper 6-7 ribs
Transverse process of C7
What osseous parts of the vertebral column serve as an origin to the iliocostalis cervicis?
NONE
What osseous parts of the vertebral column serve as an origin to the longissimus thoracis?
(3)
Accessory process and transverse processes of L1-L5
Spinous processes of L3-L5
Median sacral crest S1-S3
Which erector spinae muscles attach to cervical articular processes?
(2)
Longissimus Cervicis
Longissimus Capitis