Transversus Abdominis Muscle: Function & Origins - Human Anatomy | Kenhub

This video covers the anatomy of the transversus abdominis muscle: origins, insertion, functions and innervation. Take our quiz about the abdominal muscles at http://khub.me/wd2t9

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The transversus abdominis belongs to the lateral abdominal muscles and runs from the lower costal cartilages, thoracolumbar fascia, illiac crest and the inguinal ligament to the linea alba.

Its aponeurosis is involved in the formation of the rectus sheath as part of its posterior layer.

The transversus abdominis muscle has various functions in the body. It is involved in moving the trunk, but also stabilizes the vertebral column, creates tension of the anterior body wall and increases the intraabdominal pressure upon contraction. Unilateral contraction of the transverse abdominis muscle leads to an ipsilateral rotation of the trunk together with the internal oblique abdominis muscle.

In this video we will go over the most relevant facts of this muscle that you need to know for your studies:

- 0:09 lateral abdominal muscles
- 0:39 origin and insertion of transversus abdominis
- 1:04 innervation of transversus abdominis
- 1:22 formation of the rectus sheath
- 2:19 function of transversus abdominis


Want to test your knowledge on the muscles of the abdominal wall? Take this quiz: http://khub.me/wd2t9

Read more on the lateral abdominal muscles in our free article and learn about the other two muscles in this group (the internal and external oblique muscles) to finish with this topic: https://khub.me/cayhi

For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/bgck7