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Questions and Answers
Which artery gives off the inferior suprarenal artery?
Which artery gives off the inferior suprarenal artery?
- Abdominal aorta
- Gonadal artery
- Renal artery (correct)
- Internal iliac artery
From which vertebral level do the renal arteries arise?
From which vertebral level do the renal arteries arise?
- L5/S1
- L3/L4
- L1/L2 (correct)
- T12/L1
Which arteries are branches of the abdominal aorta?
Which arteries are branches of the abdominal aorta?
- Inferior suprarenal arteries
- Internal iliac arteries
- Superior suprarenal arteries
- Gonadal arteries/Middle suprarenal arteries (correct)
From which plexus does the somatic innervation of pelvic and perineal structures primarily come from?
From which plexus does the somatic innervation of pelvic and perineal structures primarily come from?
Which artery primarily supplies the abdomen, pelvis, and perineum?
Which artery primarily supplies the abdomen, pelvis, and perineum?
What is the primary venous drainage of the bladder in males?
What is the primary venous drainage of the bladder in males?
Where does lymphatic drainage from the bladder primarily go?
Where does lymphatic drainage from the bladder primarily go?
Where does deep lymphatic drainage from the more superior anal lymph occur?
Where does deep lymphatic drainage from the more superior anal lymph occur?
What is the location of the anorectal junction?
What is the location of the anorectal junction?
Where does the blood supply to the pelvis and perineum primarily come from?
Where does the blood supply to the pelvis and perineum primarily come from?
What is the primary venous drainage of the internal iliac vein?
What is the primary venous drainage of the internal iliac vein?
What is the primary lymphatic drainage of the bladder?
What is the primary lymphatic drainage of the bladder?
Where does the venous drainage of the bladder primarily go in females?
Where does the venous drainage of the bladder primarily go in females?
What artery is a tributary of the renal artery?
What artery is a tributary of the renal artery?
Which of the following arteries are paired?
Which of the following arteries are paired?
Where do the common iliac arteries bifurcate into internal and external iliac arteries?
Where do the common iliac arteries bifurcate into internal and external iliac arteries?
An aberrant obturator artery is an obturator artery that comes off of an inferior epigastric artery instead of an internal iliac artery
An aberrant obturator artery is an obturator artery that comes off of an inferior epigastric artery instead of an internal iliac artery
What are the two branches of the internal iliac artery
What are the two branches of the internal iliac artery
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Study Notes
Internal Iliac Artery and Pelvic Blood Supply Overview
- The blood supply to the pelvis and perineum is primarily from branches of the internal iliac artery, which is a major artery stemming from the common iliac artery.
- The branches of the internal iliac artery include parietal branches, which supply the lower limb, abdomen, pelvis, and perineum, and visceral branches, which supply various internal organs and structures.
- Parietal branches of the internal iliac artery include the iliolumbar, lateral sacral, superior gluteal, inferior gluteal, and obturator arteries.
- Visceral branches of the internal iliac artery include the umbilical, superior vesical, inferior vesical (males only), middle rectal, vaginal (females only), uterine (females only), and internal pudendal arteries.
- Venous drainage of the internal iliac vein involves communication with the internal vertebral venous plexus and the formation of various venous plexuses surrounding pelvic viscera.
- The bladder receives blood supply from the superior and inferior vesical arteries in males and the superior vesical and vaginal arteries in females, with venous drainage to the internal iliac vein.
- Lymphatic drainage from the bladder primarily goes to the internal iliac nodes, with some lymph from the superolateral aspect traveling to the external iliac nodes.
- The rectum and anal canal receive blood supply from the superior, middle, and inferior rectal arteries, with lymphatic drainage to the superficial inguinal nodes and the internal iliac nodes.
- The anorectal junction is located at the superior edge of the pelvic diaphragm and corresponds to the superior edge of the anal columns.
- The blood supply to the rectum and superior two-thirds of the anal canal comes from the superior rectal artery, middle rectal artery, and inferior rectal artery, while lymphatic drainage occurs to the inferior mesenteric nodes and the intestinal trunk.
- The internal iliac artery and its branches play a crucial role in providing blood supply to the pelvis and perineum, as well as in the venous and lymphatic drainage of these regions.
- Understanding the anatomy and function of the internal iliac artery is essential for comprehending the complex blood supply and drainage patterns in the pelvic region.
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