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Muscles of the Abdomen (Groups, Origin, Insertion, Function)

Content 0:00 Introduction 0:08 Division of the Abdominal Muscles 1:27 Quadratus Lumborum 1:53 Pyramidalis 2:22 Rectus Abdominis 2:52 Transverse Abdominal Muscle 3:49 Internal Oblique 4:21 Cremaster Muscle 5:00 External Oblique ------------------------------- 🫀 Join:    / @taimtalksmed   📷 Follow my IG:   / taimtalksmed   💝 Donation link: https://www.buymeacoffee.com/taimtalk... ------------------------------- Muscles of the Abdomen Lateral Group ○ External Oblique ○ Internal Oblique ○ Transverse Abdominal Anterior Group ○ Rectus Abdominis ○ Pyramidalis Posterior Group ○ Quadratus Lumborum Posterior Group: Quadratus Lumborum musculus wadratus lumborum Origin: Iliac Crest Iliolumbar Ligament Insertion: 12th Rib Costal process of L1-L4 Function: Extension of trunk (Bilteral Contraction) Lateroflexion of trunk (Unilateral Contraction) Anterior Group: Pyramidalis musculus pyramidalis O: Superior Pubic Ramus I: Linea Alba F: Tenses linea alba and strengthens the rectus sheath Rectus Abdominis musculus rectus abdominis O: Xiphoid Process Costal Cartilage of 5th – 7th Rib I: Body of Pubis between pubic symphysis and pubic tubercle F: Ventral Flexion of Trunk Expiration Muscle Lateral Group Transverse Abdominal musculus transversus abdominis O: Inguinal ligament Iliac Crest Thoracolumbar Fascia 7th – 12th Rib I: Linea Alba F: Rotation of the trunk Expiration Muscle Internal Oblique musculus obliquus internus abdominis O: Inguinal ligament Iliac Crest Thoracolumbar Fascia I: Linea Alba 10th – 12th Rib F: Ventral flexion of trunk (Bilateral Contraction) Tilts the trunk to the side (Unilateral Contraction) Expiration Muscle Cremaster musculus cremaster Formed by Internal Oblique and Transverse Abdominal Muscles External Oblique musculus obliquus externus abdominis O: 5th – 12th Ribs I: Linea Alba Iliac Crest F: Ventral flexion of trunk (Bilateral Contraction) Tilts the trunk to the side (Unilateral Contraction) Expiration Muscle