Longissimus Thoracis: Difference between revisions
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Revision as of 01:32, 26 August 2019
Original Editor - Oyemi Sillo
Lead Editors - Oyemi Sillo, Kim Jackson, Lucinda hampton, WikiSysop and 127.0.0.1
Description[edit | edit source]
Longissimus Thoracis belongs to the intermediate column of the Sacrospinalis group of muscles.[1]
Origin
[edit | edit source]
The common broad, thick tendon with Iliocostalis Lumborum, fibers from the transverse and mamillary processes of the lumbar vertebrae and lumbrosacral aponeurosis[2]
Insertion[edit | edit source]
The tips of transverse process of all thoracic vertebrae and the lower 9 or 10 ribs between the tubercles and angles [2]
Nerve Supply[edit | edit source]
Dorsal rami of thoracic and lumbar spinal nerves (T7 to L5) [3]
Blood Supply[edit | edit source]
Dorsal branches of the posterior intercostal arteries from the thoracic aorta. [3]
Action[edit | edit source]
- acting unilaterally, extension of vertebral column and flexion to the same side
- acting bilaterally, extension and hyperextension of vertebral column[2]
Function
[edit | edit source]
Draws ribs down to help with breathing[3]
References[edit | edit source]
- ↑ Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/.
- ↑ 2.0 2.1 2.2 http://www.wheelessonline.com/ortho/longissimus_thoracis_1
- ↑ 3.0 3.1 3.2 http://www.anatomyexpert.com/app/structure/5230/
