24 Questions
Which of the following branches of the internal iliac artery is not a visceral branch?
Inferior gluteal artery
What is the exception to the rule that the internal iliac vein receives veins corresponding to the branches of the internal iliac arteries?
Iliolumbar vein
Which of the following structures is located in front of the piriformis?
Sacral plexus
Which of the following arteries is a branch of the anterior division of the internal iliac artery and supplies the gluteal region?
Inferior gluteal artery
Which of the following veins does not have a corresponding artery?
Umbilical vein
Which of the following branches of the internal iliac artery is specific to females?
Uterine artery
What is the characteristic of the peritoneal covering of the rectum's lower third?
Devoid of peritoneal covering
What is the name of the pouch formed by the peritoneum reflecting onto the posterior and superior surfaces of the urinary bladder in males?
Recto-vesical pouch
What is the surface of the uterus that is not covered by peritoneum?
Anterior surface of cervix
In which direction does the peritoneum pass from the upper surface of the urinary bladder in females?
Towards the anterior abdominal wall
What is the characteristic of the peritoneal covering of the rectum's upper third?
Covered by peritoneum on the front and sides
What is the name of the pouch formed by the peritoneum reflecting onto the upper part of the posterior wall of the vagina in females?
Recto-vaginal pouch
What is the location of the bifurcation of the internal iliac artery into anterior and posterior divisions?
At the upper part of the greater sciatic foramen
Which of the following arteries is NOT a branch of the internal iliac artery?
Renal artery
Which spinal nerves form the superior gluteal nerve?
L4, L5, S1
What is the relationship between the Para-Rectal Fossa and the Broad Ligament of the Uterus?
The Para-Rectal Fossa and the Broad Ligament of the Uterus are separate structures
What is the origin of the lumbosacral trunk?
L4, L5 and upper part of S1
What is the origin of the internal iliac artery?
Common iliac artery
Which nerve is responsible for supplying the quadratus femoris muscle?
Nerve to quadratus femoris
Which of the following structures is NOT a part of the pelvic arrangement?
Ureter
Which of the following nerves is NOT a branch of the sacral plexus?
Obturator nerve
What is the name of the artery that arises from the internal iliac artery and supplies the rectum?
Superior Rectal artery
What is the site of formation of the coccygeal plexus?
On the coccygeus muscle
What is the main branch of the coccygeal plexus?
Anococcygeal nerves
Study Notes
Internal Iliac Artery
- Branches into anterior and posterior divisions at the upper part of the greater sciatic foramen
- Anterior division (parietal branches):
- Inferior gluteal artery
- Internal pudendal artery
- Obturator artery
- Anterior division (visceral branches):
- Umbilical artery
- Middle rectal artery
- Inferior vesical artery (or vaginal artery in females)
- Uterine artery (in females)
Internal Iliac Vein
- Formed by the union of veins that accompany the branches of the internal iliac arteries
- Receives veins corresponding to the branches of the internal iliac arteries, except for:
- Iliolumbar vein (parietal), which ends in the common iliac vein
- Umbilical artery, which does not have a corresponding vein
Sacral Plexus
- Located in front of the piriformis muscle
- Formed by the lumbosacral trunk (L4,5) and sacral nerves (S1-3)
- Branches:
- Superior gluteal nerve (L4,5, S1)
- Inferior gluteal nerve (L5, S1,2)
- Nerve to quadratus femoris
- Nerve to obturator internus
- Sciatic nerve (S2,3)
- Pudendal nerve (S2,3,4)
- Perforating cutaneous nerve
- Coccygeal plexus (S4,5 and coccygeal nerves)
Coccygeal Plexus
- Located on the coccygeus muscle
- Formed by the lower part of S4, S5, and coccygeal nerves
- Branches:
- Anococcygeal nerves to coccygeus and levator ani
Pelvic Arrangement and Peritoneum
- In males:
- Rectum: upper 1/3 covered by peritoneum on front and sides, middle 1/3 covered on front, lower 1/3 uncovered
- Peritoneum forms the recto-vesical pouch
- Peritoneum passes from urinary bladder to line the anterior abdominal wall
- In females:
- Rectum: upper 1/3 covered by peritoneum on front and sides, middle 1/3 covered on front, lower 1/3 uncovered
- Peritoneum forms the recto-vaginal or Douglas pouch
- Peritoneum covers the uterus (except the ant surface of cervix) and forms the utero-vesical pouch
- Peritoneum passes from urinary bladder to line the anterior abdominal wall
This quiz covers the branches of the internal iliac artery, including the anterior and posterior divisions. Learn about the inferior gluteal artery, internal pudendal artery, obturator artery, and more!
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