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Nerve, blood supply, origin, insertion

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Muscle
Origin
Insertion
Blood Supply
Innervation
External Oblique m   External surface and inferior border of lower 8 ribs; Anterior 1/2 of outer lip of ant. iliac crest; Anterior aponeurosis from 9th costal cartilage to below umbilicus     (SPLS) Superior and inferior epigastric; posterior lumbar; lower post. intercostal and subcostal; superficial & deep circumflex iliac   Terminal branches of ventral rami T7-T12 via lower intercostal and subcostal n  
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Internal Oblique m.   Inferior borders & tips of lower 4 ribs; Thoracolumbar fascia; Ant 2/3 of intermediate line of ant. iliac crest; Lateral 2/3 upper surface of inguinal lig; crest and medial part of pectineal line; ant aponeurosis to cartilages of ribs 7-9     SPLS   Terminal branches of ventral ramus of T7-T12; Ilioinguinal & iliohypogastric L1  
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Transversus Abdominis   Internal aspects of lower 6 costal cartilages; thoracolumbar fascia between iliac crest & 12th rib; ant. 2/3 of inner lip of ant iliac crest; Lateral 2/3 of inguinal lig; pubic crest and pectineal line; aponeurosis to linea alba     SPLS   Same as internal Oblique  
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Quadratus Lumborum m.   Iliolumbar ligament and adjacent portion of iliac crest   Medila 1/2 of lower border of 12th rib; Apices of transverse processes of L1-L4   (ALBS) Arteria lumbalis ima; lumbar br of iliolumbar; br of lumbar; subcostal   Ventral rami of T12-L4  
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Cremaster m   Inferomedial border of internal olblique and TA; Middle of inguinal lig   Pubic tubercle and lateral pubic crest   Cremastic a from inferior epigastric a   Genital br. of genitofemoral n. L1,L2  
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Pyramidalis m   Front of pubis and ligamentous fibers in front of symphysis   Linea alba between umbilicus and pubis   Inferior epigastric a; Deep circumflex iliac a   Terminal branches of ventral ramus of T12 via subcostal  
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Rectus abdominis m   Costal cartilage 5-7; crest of pubis; Contralateral m. at linea alba     Superior and inferior epigastric a; branch from posterior lumbar; lower posterior intercostal; subcostal   Terminal branches of ventral rami of T6-T12 via lower intercostal and subcostal  
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Created by: PippaODU
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