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External abdominal oblique muscle has a variety of functions depending if it contracts unilaterally or bilaterally. When acting unilaterally and in synergy with the contralateral internal abdominal oblique, it rotates the trunk to the opposite side.
The external oblique is a muscle of the anterior abdominal wall. It is the largest and most superficial of the flat abdominal wall muscles. Attachments: Originates from ribs 5-12 and inserts onto the iliac crest and pubic tubercle. Actions: Flexion and contralateral rotation of the torso.
The external oblique functions to pull the chest downwards and compress the abdominal cavity, which increases the intra-abdominal pressure as in a Valsalva maneuver. It also performs ipsilateral (same side) side-bending and contralateral (opposite side) rotation: the right external oblique would side-bend to the right and rotate to the left ...
Function. The external obliques on either side: Help rotate the trunk. Bilateral contraction of EO along with rectus abdominis and internal oblique flexes the trunk by drawing the pubis towards the xiphoid (like in crunches or sit-ups) [2] Stabilizing the core.
⭐ External Oblique Muscle Anatomy ⭐💪 Origin: External surfaces of the fifth to twelfth ribs💪 Insertion: Iliac crest, pubic crest, pubic tubercle, & linea a...
Action: Flexes, laterally flexes, and rotates trunk; compresses and provides structural support to adjacent abdominal structures. Innervation: Anterior rami of seventh to twelfth thoracic nerves. Arterial Supply: Lower posterior intercostal, subcostal, deep circumflex iliac, and superior and inferior epigastric arteries. Complete Anatomy.
The external oblique muscle is one of the outermost abdominal muscles, extending from the lower half of the ribs around and down to the pelvis. Its lowest part connects to the the top corner of...