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MOINA of the abdomen
Origin, Insertion, Nerve supply, Action of muscles of the Abdomen
| Question | Answer |
|---|---|
| Originated at the lower 8 ribs | External oblique |
| Inserted at the lower 3 ribs and costal cartilages, xiphoid process, linea alba, and symphysis pubis | Internal oblique |
| What muscles are innervated by the lower 6 thoracic nerves, iliohypogastric nerve, and ilioinguinal nerve? | External oblique, Internal oblique, and transversus muscle |
| Muscle that compresses abdominal contents, flexes vertebral column, and an accessory muscle for expiration | Rectus abdominis |
| Where does the pyramidalis originated? | Anterior surface of pubis |
| What muscles are inserted at the lesser trochanter? | Iliacus, and Psoas |
| Muscles innervated by femoral nerve | Iliacus, and Psoas |
| It fixes12th rib during inspiration; depresses 12th rib during forced expiration; and laterally flexes vertebral column on same side. | Quadratus lumborum |
| Originated at the lumbar fascia, iliac crest, and lateral 2/3 of inguinal ligament. | Internal oblique |
| Inserted at the xiphoid process, linea alba, and symphysis pubis. | Transversus |
| Nerve supply of rectus abdominis | Lower 6 thoracic nerves |
| What action does pyramidalis muscle preform? | It tenses the linea alba |
| Where does the Iliacus muscle originated? | Iliac fossa |
| Where does the Quadratrus lumborum inserted? | 12th rib |
| Nerve supply of pyramidalis muscle | 12th thoracic nerve |
| Muscle that performs hip and trunk flexion | Iliacus, and psoas muscle |
| Originated at the 12th thoracic vertebrae, and 5 lumbar vertebrae | Psoas |
| Muscle inserted at the xiphoid process, linea alba, pubic crest, pubic tubercle, and iliac crest | External oblique |
| What muscles supports and compresses abdominal contents; assists in flexion & rotation of the trunk; and assists in forced expiration, micturition, defecation, parturition, and vomiting | External Oblique and Internal Oblique |
| Where does the transversus muscle originated? | Lumabr fascia, iliac crest, lateral 1/3 of inguinal ligament, and lower 6 costal cartilages |
| Where does rectus abdominis inserted? | 5th, 6th, and 7th costal cartilages and xiphoid process |
| Muscle inserted at linea alba | Pyramidalis |
| Muscle originated at the iliolumbar ligament, iliac crest, and transverse processes of lower lumbar vertebrae. | Quadratus lumborum |
| nerve supply of Quadratus lumborum | Lumbar plexus |
| Action of transversus muscle | It compresses abdominal contents |
| Where does the rectus abdominis originated? | Symphysis pubis and pubic crest |
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