Human Anatomy, Part 1 - K. A. Dyubenko, A. K. Kolomiysev, Yu. B. Chaikovsky 2002

Special Part
Myology, myologia [the study of muscles] — Muscles and Fasciae of the Trunk
Muscles and Fasciae of the Abdomen — Muscles of the Abdomen, musculi abdominis

The Abdominal Muscles form the walls of the Abdominal cavity AND are therefore collectively referred to as the Muscles of the abdominal press, or prelum abdominale. They support the Internal Organs in their anatomical position and assist in Respiration, urination, defecation, and childbirth.

The abdominal muscles are divided into three groups: anterior, lateral, and posterior.

Anterior group:

1. Rectus abdominis Muscle, m. rectus abdominis.

2. Pyramidalis muscle, m. pyramidalis.

Lateral group:

1. External oblique muscle of the abdomen, m. obliquus externus abdominis.

2. Internal oblique muscle of the abdomen, m. obliquus internus abdominis.

3. Transverse abdominal muscle, m. transversus abdominis.

Posterior group:

Quadratus lumborum muscle, m. quadratus lumborum.



Last update: 08/08/2026

Editorial and Educational Adaptation: This material has been compiled based on the primary/original source text. The project team performed an editorial review, corrected technical inaccuracies, structured sections, and adapted the content for an educational format.

What was processed:

  • elimination of formatting defects (OCR errors, structural breaks, corrupted characters);
  • editorial organization of content;
  • standardization of terminology in accordance with academic sources;
  • verification of factual statements against the original source text.

All mentions of the author, publication year, and origin of the primary text have been preserved in accordance with the source.