Abdominal muscles External abdominal oblique muscle Origin: External surface of ribs 5-12 Insertion: Linea alba, pubic tubercle, anterior half of iliac crest Innervation: Lower intercostal nerves (T7-T11), subcostal nerve (T12), Iliohypogastric nerve (L1) Function: Bilateral contraction - Trunk flexion, Compresses abdominal viscera, Expiration Unilateral contraction - Trunk lateral flexion (ipsilateral), Trunk rotation (contralateral) Internal abdominal oblique muscle Origin: Thoracolumbar fasci

Internal oblique abdominis 👨‍⚕️ #muscle #anatomy | Dr. Ishtiaque Arafat

Internal abdominal oblique is a broad thin muscular sheet found on the lateral side of the abdomen. Going from superficial to deep, the external abdominal oblique, internal abdominal oblique and transversus abdominis comprise the three distinct layers of the lateral abdominal wall. As its name suggests, the direction of its fibers are obliquely oriented, perpendicular to those of the external abdominal oblique. Together with the other abdominal muscles, the internal abdominal oblique is importan

External abdominal oblique is a paired muscle located on the lateral sides of the abdominal wall. Along with internal abdominal oblique and transversus abdominis, it comprises the lateral abdominal muscles. In a broader picture, these muscles make up the anterolateral abdominal wall together with two anterior abdominal muscles; the rectus abdominis and pyramidalis. Origin and insertion External abdominal oblique muscle originates from the external surfaces of ribs 5-12. The attaching fibers inte