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

Content Introduction 0:00 Division of the Abdominal Muscles 0:08 Quadratus Lumborum 1:27 Pyramidalis 1:53 Rectus Abdominis 2:22 Transverse Abdominal Muscle 2:52 Internal Oblique 3:49 Cremaster Muscle 4:21 External Oblique 5:00 ------------------------------- 💎Channel membership:    / @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