The arteries of the pelvis: anterior trunk IIA

Question 1

what does the pelvic cavity contain?

Answer 1

organs of reproduction, urinary bladder, pelvic colon, rectum and numerous muscles

Question 2

what is the arterial supply largely via?

Answer 2

the internal iliac artery, with some smaller arteries providing additional supply

Question 3

where does the internal iliac artery originate?

Answer 3

at the bifurcation of the common iliac artery into its internal and external branches

Question 4

what does the external iliac artery supply?

Answer 4

the femoral artery within the lower limb

Question 5

where is the bifurcation of the common iliac artery?

Answer 5

approximately at vertebral level L5-S1

Question 6

where does the internal iliac artery descend?

Answer 6

descends inferiorly, crossing the pelvic inlet to enter the lesser pelvis

Question 7

where is the internal iliac artery’s situated during its descent?

Answer 7

During its descent, it is situated medially to the external iliac vein and obturator nerve

Question 8

where does the internal iliac artery divide into anterior and posterior trunks?

Answer 8

At the superior border of the greater sciatic foramen, it divides into anterior and posterior trunks

Question 9

what does the anterior trunk of the internal iliac artery give rise to?

Answer 9

gives rise to numerous branches that supply the pelvic organs, the perineum, and the gluteal and adductor regions of the lower limb

Question 10

what are branches of the internal iliac artery in females? (anticlockwise)

Answer 10

Obturator artery
Umbilical artery
Vaginal artery (female)
Uterine artery (female)
Middle rectal artery
Internal pudendal artery
Inferior gluteal artery

Question 11

what are branches of the internal iliac artery in males? (anticlockwise)

Answer 11

Obturator artery
Umbilical artery
Inferior vesical artery (male)
Middle rectal artery
Internal pudendal artery
Inferior gluteal artery

Question 12

where does the obturator artery travel through?

Answer 12

Travels through the obturator canal

Question 13

what accompanies the obturator artery?

Answer 13

accompanied by the obturator nerve and vein

Question 14

what does the obturator artery supply?

Answer 14

supplies the muscles of the thigh’s adductor region

Question 15

what does the umbilical artery give rise to?

Answer 15

Gives rise to the superior vesical artery

Question 16

what does the superior vesical artery (branch of umbilical artery)?

Answer 16

supplies the superior aspect of the urinary bladder

Question 17

in utero, what does the umbilical artery transport?

Answer 17

In utero, the umbilical artery transports deoxygenated blood from the fetus to the placenta

Question 18

what does the Inferior vesical artery (male) supply?

Answer 18

Supplies the prostate gland, seminal vesicle and inferior aspect of the bladder

Question 19

what is the equivalent of the Inferior vesical artery (male) in females?

Answer 19

the vaginal artery

Question 20

where does the Vaginal artery (female) descend? supplying?

Answer 20

Descends to the vagina, supplying additional branches to the inferior bladder and rectum

Question 21

where does the Uterine artery (female) travel along? to reach? then?

Answer 21

Travels within the broad ligament to reach the cervix, where it ascends along the lateral aspect of the uterus

Question 22

what happens to the uterine artery? where?

Answer 22

At origin of the fallopian tubes, it anastamoses with the ovarian artery

Question 23

during the course of the uterine artery, where does it cross the ureters?

Answer 23

superiorly

the bridge over the water

Question 24

where does the middle rectal artery travel?

Answer 24

Travels medially to supply the distal part of the rectum

Question 25

what does the middle rectal artery form anastamoses with?

Answer 25

anastamoses with the superior rectal artery and the inferior rectal artery

Question 26

where is the superior rectal artery derived from?

Answer 26

inferior mesenteric artery

Question 27

where is the inferior rectal artery derived from?

Answer 27

internal pudendal artery

Question 28

where does the internal pudendal artery travel? exit?

Answer 28

Moves inferiorly to exit the pelvis via the greater sciatic foramen

Question 29

what is the internal pudendal artery accompanied by?

Answer 29

the pudendal nerve

Question 30

where does the internal pudendal artery then enter after leaving the pelvis via the greater sciatic foramen?

Answer 30

enters the perineum via the lesser sciatic foramen

Question 31

where is the internal pudendal artery mainly responsible for supplying blood to?

Answer 31

to the perineum

Question 32

what is the inferior gluteal artery a branch of?

Answer 32

The terminal branch of the anterior trunk of internal iliac artery

Question 33

where does the inferior gluteal artery leave the pelvic cavity?

Answer 33

via the greater sciatic foramen, emerging inferiorly to the piriformis muscle in the gluteal region

Question 34

what does the inferior gluteal artery contribute to in terms of blood supply?

Answer 34

It contributes to the blood supply of the gluteal muscles and hip joint