Last update:

Iliocostalis Thoracis Muscle

image descriptionIliocostalis Thoracis:

Unlabelled image of the muscles of the back
Labelled image of the sternocleidomastoid, splenius capitis, splenius cervisis, iliocostalis cervicis, iliocostalis thoracis, external intercostals, longissimus thoracis, iliocostalis lumborum, and spinalis thoracis muscles
Labelled image of the splenius capitis, splenius cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, iliocostalis lumborum, and spinalis thoracis muscles
Labelled image of the semispinalis capitis, longisimus capitid, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, iliocostalis lumborum, and spinalis thoracis
Labelled image of the longissimus capitis, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, iliocostals lumborum, and spinalis thoracis muscles
Labelled image of the longissimus capitis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, iliocostalis lumborum, and spinalis thoracis muscles
Labelled image of the iliocostalis cervicis, iliocostalis thoracis, and iliocostalis lumborum muscles
Labelled image of the iliocostalis thoracus, and iliocostalis lumborum muscles
Labelled image of the iliocostalis thoracis.
Muscularis iliocostalis thoracis
1
2
3
4
5
6
7
8
9

image descriptionAttachments of Iliocostalis Thoracis:  Origin & Insertion

Origin: angles of ribs 7-12, medial to insertions of iliocostalis lumborum

Insertion: angles of ribs 1-6; transverse process of C7.

Unlabelled image of the muscles of the back
Labelled image of the insertion and origin of the iliocostalis thoracis muscle
Origin and insertion of the iliocostalis thoracis
1
2

Actions of the Iliocostalis Thoracis Muscle:

  1. Bilateral action: image descriptionextends vertebral column (= back)
Extensions of the vertebral column animation slide 1
Extensions of the vertebral column animation slide 2
Extensions of the vertebral column animation slide 3
Extensions of the vertebral column animation slide 4
Extension of the vertebral column.
  1. Unilateral actions: image descriptionlaterally flexes vertebral column (= back)
Lateral flexion of the vertebral column animation slide 1
Lateral flexion of the vertebral column animation slide 2
Lateral flexion of the vertebral column animation slide 3
Lateral flexion of the vertebral column animation slide 4
Lateral flexion of the vertebral column animation slide 5
Lateral flexion of the vertebral column.

Nerve Supply to Iliocostalis Thoracis:

  1. Dorsal rami of thoracic spinal nerves.

Overview of the Muscles of the Back:

Test yourself with anwers hidden
Test yourself image showing answers: sternocleidomastoid, spinalis capitis, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, external intercostals, longissimus thoracis, spinalis thoracis, iliocostalis lumborum
Test yourself image showing answer: spinalis capitis, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, spinalis thoracis, iliocostalis lumborum
Test yourself image showing answer: semispinalis capitis, longissimus capitis, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, spinalis thoracis, iliocostalis lumborum
Test yourself image showing answers: longissimus thoracis, spinalis cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, spinalis thoracis, iliocostalis thoracis.
Test yourself showing answers: longissimus cervicis, iliocostalis cervicis, iliocostalis thoracis, longissimus thoracis, iliocostalis lumborum
Test yourself image showing answers: iliocostalis cervicis, iliocostalis thoracis, iliocostalis lumborum
Test yourself image showing answers: Iliocostalis thoracis, iliocostalis lumborum
Test yourself image showing answers: iliocostalis thoracis
Test yourself image showing answers: insertion, and origin
Review the muscles of the back and test yourself.
1
2
3
4
5
6
7
8
9
10