User:Cspiro/Triangle of marcille

The Triangle of Marcille

Borders:
 * The medial border is formed by the body of the L5 vertebra.
 * The lateral border, by the medial border of psoas major.
 * The inferior border, by the upper border of the ala of the sacrum.
 * The floor of triangle, by the transverse process of the 5th lumbar vertebra, iliolumbar and lumbosacral ligaments.

Contents :

6 vessels:
 * Common iliac artery and its branches- internal and external iliac arteries
 * Common iliac vein and its tributaries- internal and external iliac veins
 * Genital arteries and veins
 * Iliolumbar trunk
 * Inferior mesenteric artery in the left triangle of Marcielle, which is names superior haemarrhoidal in this region
 * Common iliac lymph nodes and lymphatics

6 nerves:
 * Lumbosacral trunk (L4-5)
 * Obturator nerve
 * 1st sacral nerve
 * Sympathetic trunk
 * Branch of the sympathetic trunk passing to the inferior hypogastric plexus
 * Genitofemoral nerve

2 other structures:
 * Ureter
 * Pelvic floor muscles