El oblicuo externo es un músculo de la pared abdominal anterior. Es el músculo más grande y superficial de la pared abdominal plana. Inserciones: se origina en las costillas 5 a 12 y se inserta en la cresta ilíaca y el tubérculo púbico. Acciones: flexión y rotación contralateral del torso. Inervación: nervios toracoabdominales (T7-T11) y nervio subcostal (T12). Irrigación sanguínea: arterias intercostales posteriores inferiores, arteria subcostal, arteria circunfleja ilíaca profunda. By TeachMeSeries Ltd (2026) Fig. 1: vista lateral de la pared abdominal. Se aprecian el oblicuo externo y sus fibras aponeuróticas. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Pro Feature - Dissection Atlas Dissection of the anterolateral abdominal wall Dissection of the anterolateral abdominal wall You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the oblicuo externo muscle? The oblicuo externo is the largest and most superficial muscle of the anterior abdominal wall, playing a crucial role in torso movement. What are the attachments of the oblicuo externo? This muscle originates from the 5th to 12th ribs and inserts into the iliac crest and pubic tubercle, providing structural support to the abdominal wall. What actions does the oblicuo externo facilitate? The oblicuo externo is responsible for flexing and rotating the torso contralaterally, enabling various movements of the trunk. What nerves innervate the oblicuo externo? The oblicuo externo is innervated by the thoracoabdominal nerves (T7-T11) and the subcostal nerve (T12), which are essential for its function. What is the blood supply to the oblicuo externo muscle? The oblicuo externo receives blood from the lower posterior intercostal arteries, the subcostal artery, and the deep circumflex iliac artery, ensuring its metabolic needs are met. Rate This Article