Abdominal external oblique muscle

From WikiMD's Wellness Encyclopedia
Illu trunk muscles

Abdominal External Oblique Muscle

The Abdominal External Oblique Muscle is a large, thin, muscular layer of the abdomen that forms part of the abdominal wall. It is situated on the lateral and anterior parts of the abdomen. This muscle is the most superficial of the three flat muscles of the abdominal wall, the other two being the Internal Oblique Muscle and the Transversus Abdominis Muscle.

Anatomy[edit | edit source]

The Abdominal External Oblique Muscle originates from the lower eight ribs, interdigitating with the Serratus Anterior Muscle and the Latissimus Dorsi Muscle. Its fibers run diagonally downward and medially, inserting into the Linea Alba, Pubic Tubercle, and the anterior half of the Iliac Crest. The muscle's fibers form aponeuroses as they descend, which contribute to the formation of the Inguinal Ligament.

Function[edit | edit source]

The primary function of the Abdominal External Oblique Muscle is to assist in the lateral flexion and rotation of the trunk. When both sides of the muscle contract simultaneously, they aid in abdominal compression, contributing to functions such as forced expiration, coughing, and defecation. Additionally, this muscle plays a crucial role in maintaining posture and supporting the abdominal viscera.

Clinical Significance[edit | edit source]

Injuries to the Abdominal External Oblique Muscle can occur due to overuse, sudden twists, or direct trauma. Symptoms of an injury include pain, swelling, and a decrease in the strength of the abdominal wall. Hernias, particularly Inguinal Hernias, can also involve the Abdominal External Oblique Muscle due to weaknesses in the abdominal wall.

Exercise and Strengthening[edit | edit source]

Exercises targeting the Abdominal External Oblique Muscle include side planks, Russian twists, and bicycle crunches. Strengthening this muscle can improve core stability, reduce the risk of injury, and enhance athletic performance.

See Also[edit | edit source]


WikiMD
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Search WikiMD

Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD

WikiMD's Wellness Encyclopedia

Let Food Be Thy Medicine
Medicine Thy Food - Hippocrates

Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.

Contributors: Prab R. Tumpati, MD