Iliocostalis Anatomy: Origin, Insertion & Action

⭐ Iliocostalis Muscle Anatomy ⭐
The iliocostalis muscle has three sections, the cervicis, thoracis, and lumborum. It is also part of the erector spinae muscle group. The anatomy of the iliocostalis is below. Watch the full video for an in depth explanation.
💪 Origins:
🔴 Iliocostalis cervicis: angle of ribs 3-6
🔴 Iliocostalis thoracis: angle of ribs 7-12
🔴 Iliocostalis lumborum: medial end of iliac crest, lateral crest of sacrum, & thoracolumbar fascia
💪 Insertions:
🔵 Iliocostalis cervicis: posterior tubercle of the transverse process of C4-C6.
🔵 Iliocostalis thoracis: transverse process of C7 & angles of the ribs 1-6
🔵 Iliocostalis lumborum: transverse processes of L1-L4 & angles of ribs 4-12
💪 Actions:
🟢 Unilateral contraction: lateral flexion of the trunk/vertebral column & weak lateral flexion at the base of the neck (below C4)
🟢 Bilateral contraction: extends the trunk/vertebral column & weak extension of the base of the neck (below C4)
💪 Nerve:
🟣 Lateral branches of the posterior rami of the spinal nerves
💪 Artery:
🟠 Dorsal branches of the posterior intercostal, subcostal, lumbar & lateral sacral arteries

❗ ❗ ❗ My other erector spinae muscle group videos ❗ ❗ ❗
Longissimus:    • Longissimus Anatomy: Origin, Insertio...  
Spinalis:    • Spinalis Anatomy: Origin, Insertion &...  
Erector Spinae Muscle Group:    • Erector Spinae Anatomy  

Chapters:
0:00 - Intro
0:14 - Location & overview of the iliocostalis
2:17 - Origin of the iliocostalis
4:25 - Insertion of the iliocostalis
5:56 - Actions of the iliocostalis

⭐ Want to learn more about the iliocostalis? Then check out the full article on the Bodyworks Prime website:
https://bodyworksprime.com/iliocostalis/

⭐ If you would like some help memorising the iliocostalis' information then be sure to check out the free flashcards here: https://bodyworksprime.com/iliocostal...

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