Intrinsic Muscles (Middle: Illiocostalis) Flashcards
Posterior intercostal arteries supply which erector spinea muscles?
Spinalis thoracis
longissimus cervicis
longissimus thoracis
Iliocostalis cervicis
iliocostalis thoracis
iliocostalis lumborum
What is the blood supply of longissimus capitis?
Occipital artery
Deep cervical artery
What is the origin of iliocostalis lumborum?
Iliac crest
Thoracolumbar fascia
What is the insertion of iliocostalis lumborum?
Lower 9 ribs lateral to angles
Ribs 3/4 - 12
What is the action of illiocostalis luborum ?
Extension and lateral flexion of the vertebral column.
What is the innervation of illiocostalis lumborum?
Dorsal rami of lumbar nerves
What is the blood supply of illiocostalis lumborum?
Posterior intercostal arteries
Lumbar arteries
(Superior portion covers ribs)
What is the origin of iliocostalis thoracis?
The lower six ribs
medial to illiocostalis lumborum
(Remember: Thora-6! Attaches on upper and lower six ribs)
What is the insertion of iliocostalis thoracis?
Upper six ribs and TPS of C7
What is the action of illiocostalis thoracis?
Extension of the vertebral column
What is the innervation of iliocostalis thoracis?
Dorsal rami of thoracic spinal nerves
What is the blood supply of iliocostalis thoracis
Posterior intercostal arteries
What is illiocostalis cervicis deep to?
Deep to splenius cervicis and capitis
What is the origin of illiocostalis services?
Upper three ribs at angles
Ribs 1,2,3
What is the insertion of iliocostalis cervicis?
TPS of C4- C6
What is the innervation of illiocostalis cervicis?
Dorsal Rami C4 - C6
What is the blood supply for illiocostalis cervicis?
Posterior intercostal arteries
Illiocostales is what part of what muscle group?
Erector spinae
What is the order of erector spinae from lateral to medial?
Illiocostalis
Longissimus
Spinalis
I
Love
Soup 🍲
