University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

439

Pages:

4
Author:

Mariam A. A.

Anterolateral muscles Flat muscles - External oblique - Internal oblique - Transversus abdominis Vertical muscles - Rectus abdominis - Pyramidalis Muscle Origin Insertion Innervation Blood supply Action/s External oblique External surfaces of 5th– 12th ribs Linea alba, pubic tubercle, and anterior half of iliac crest Thoraco-abdominal nerves (T7–T11 spinal nerves) and subcostal nerve compresses and supports abdominal viscera flexes and rotates trunk Internal oblique Thoracolumbar fascia, anterior two thirds of iliac crest, and connective tissue deep to lateral third of inguinal ligament inferior borders of 10th– 12th ribs, linea alba, and pecten pubis via conjoint tendon Thoraco-abdominal nerves (anterior rami of T6– T12 spinal nerves) and first lumbar nerves Upper two thirds: branches of inferior intercostal and subcostal arteries Inferior third: deep circumflex artery Lower posterior intercostal. subcostal, inferior epigastric, superficial, and deep circumflex, and posterior lumbar arteries Transverse abdominus Internal surfaces of 7th– 12th costal cartilages, thoracolumbar fascia, iliac crest, and connective tissue deep to lateral third of inguinal ligament Pubic symphysis and pubic crest Linea alba with aponeurosis of internal oblique, pubic crest, and pecten pubis via conjoint tendon Thoraco-abdominal nerves (anterior rami of T6– T12 spinal nerves) and first lumbar nerves Lower intercostal, subcostal. Superior and inferior epigastric, superficial, and deep circumflex and posterior arteries Compresses and supports abdominal viscera Xiphoid process and 5th– 7th costal cartilages Thoraco-abdominal nerves (anterior rami of T6– T12 spinal nerves) Inferior and superior epigastric, posterior intercostal, subcostal and deep circumflex arteries flexes trunk (lumbar vertebrae) and compresses abdominal viscera stabilizes and controls tilt of pelvis (antilordosis) Rectus abdominus Compresses and supports abdominal viscera flexes and rotates trunk Pyramidalis Pubic crest and pubic symphysis Linea alba Subcostal nerve (T12) Inferior epigastric artery Tenses linea alba