Internal Iliac Artery (The 2+4+4 rule)

This video will cover the:
- Internal Iliac Artery

Content:
Introduction: 0:00
The 2+4+4 Rule: 01:26
2 branches to the back body wall: 01:50
4 branches leaving the pelvis: 02:52
4 branches supplying structures within the pelvis: 07:56

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Easy way to remember the side branches of Internal Iliac Artery / Mnemonics for Internal Iliac (A. Iliaca Interna):
- 2+4+4
- 2 arteries to the back body wall:
○ Iliolumbal Artery (arteria iliolumbalis): Divides into Lumbar branch (r. lumbalis) and Iliac branch (r. iliacus)
○ Lateral Sacral Artery (Arteria sacrales laterales): give off spinal branches (rr. spinales)
- 4 arteries leaving the pelvic cavity:
○ Obturator Artery (A. obturatoria): Goes through obturator canal and divides into anterior and posterior branch (r. anterior et r. posterior).
§ Side branches:
§ Pubic branch (r. pubicus): communicate with pubic branch of inferior epigastric artery and form corona mortis
§ Acetubular branch (r. acetabularis): which goes underneath the transverse acetubular ligament and runs inside the ligament of the femoral head to supply capu femoris
○ Superior Gluteal Artery (A. glutea superior): leaves above the piriforem muscle
○ Inferior Gluteal Artery (A. glutea inferior): leaves below the piriform muscle
○ Internal pudendal artery (A. pudenda interna): leaves below the piriform muscle, and continues in the space between the perineal muscle and muscles of the pelvic diaphragm and terminates as the deep and dorsal arteries of the penis (a. dorsalis penis et a. profunda penis) or the deep and dorsal arteries of the clitoris (a. dorsalis clitoridis et a. profunda clitoridis)
§ Side branches:
§ Inferior rectal artery (a. rectalis inferior)
§ perineal artery (a. perinealis) gives off posterior scrotal artery (rr. scrotales posteriores) and posterior labial artery (rr. labiales posteriores)
§ Urethral branch (a. urethralis)
§ Artery of the bulb of the penis (a. bulbi penis)
§ Artery of the bulb of the vestibule (a. bulbi vestibuli)
- 4 arteries leaving the pelvic cavity
○ Umbilical artery (A. umbilicalis): Artery found during fetal life, a portion obliterates and becomes the medial umbilical fold (plica umbilicalis medialis).
§ What remains is the:
§ superior vesical artery (aa. vesicales superiores)
§ artery of the ductus deferens (a. ductus deferentis) give off branches fo the urethra (rr. Ureterici)
○ Inferior Vesical artery (Aa. vesicales inferiores)
○ Uterine Artery (A. uterina) runs upwards along the side of the uterus and divides into tubal branch (r. tubarius) which supplies tuba uterina and mesosalpinx and the ovarian branch (r. ovaricus) communicate with the ovarian artery of the abdominal aorta
○ Middle rectal artery (A. rectalis media)
- Blood supply of the rectum:
○ Superior rectal artery from the inferior mesenteric artery
○ Middle rectal artery from the Internal iliac artery
○ Inferior rectal artery from the internal pudendal artery

Видео Internal Iliac Artery (The 2+4+4 rule) канала Meditay