Lateral, oblique abdominal wall muscles

Exercises

Trunk

Abdominal muscles

Neighbouring structures

Front, rear abdominal muscles

Colon

Body regions

Abdominal wall muscles

Musculature trunk

Trunk

Organ system

Muscles

Active movement apparatus

Movement apparatus

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General

The lateral oblique abdominal wall muscles are composed of the muscles m. obliquus externus abdominis, m. obliquus internus abdominis and m. transversus abdominis.

The most important functions of the abdominal wall muscles are the movement of the trunk, the stabilization of the spine and the tension of the abdominal wall. They belong to the expiratory auxiliary respiratory muscles. By increasing the intraabdominal pressure, they enable the so-called abdominal press.

A schematic drawing of the muscles (m. obliquus externus abdominis, m. obliquus internus abdominis and m. transversus abdominis) can be displayed by clicking on the respective name in the "WebViewer".

	M. obliquus externus abdominis	M. obliquus internus abdominis	M. transversus abdominis
Origin	Outside surface of the 5th-12th rib	deep leaf of fascia thoracolumbalis Linea intermedia of crista iliaca Spina iliaca anterior superior lateral half of ligament inguinale	Internal surfaces of the 7th-10th rib cartilage and the 11th and 12th rib deep leaf of fascia thoracolumbalis labium internum of crista iliaca, spina iliaca anterior superior lateral part of ligamentum inguinale
Insertion	Labium externum of crista lilica Ligamentum inguinale Tuberculum pubicum Front leaf of rectus sheath Linea alba	Bottom margins of the 10th-12th rib Front and back leaf of the rectus sheath line alba	Back leaf of rectus sheath Linea alba
Function	one-sided:Lateral flexion of the trunk to the ipsilateral side, rotation of the trunk to the contralateral side two-sided: Ventral flexion of the trunk, alignment of the pelvis, abdominal press and expiration	one-sided:Lateral flexion of the trunk to the ipsilateral side, rotation of the trunk to the ipsilateral side two-sided:Ventral flexion of the trunk, alignment of the pelvis, abdominal press and expiration	one-sided:lateral flexion of the trunk to the ipsilateral side two-sided:abdominal press and expiration
Innervation	Nervi intercostales (Th5-12)	Nervi intercostales (Th8-12) Nn. iliohypogastricus and ilioinguinalis M. cremaster (r. genitalis of N. genitofemoralis)	Nervi intercostales (Th5-12) Nn. iliohypogastricus and ilioinguinalis

Free exploration

Look at the position of the lateral oblique abdominal wall muscles in 3D and explore them freely. Afterwards, you can check your learned knowledge through the exercise tasks.

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Exercises

Further article

Back muscles - lateral tract

Bones Trunk

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