GA-Pelvic vessels, Nerves lymph

Question 1

what arteries branch off of the anterior division of the internal iliac? (8)

Answer 1

umbilical/superior vesicular a
inferior vesicular a
middle rectal a
obturator a
internal pudendal a
inferior gluteal a
uterine a
vaginal a

Question 2

what arteries branch off the posterior division of the internal iliac? (3)

Answer 2

lateral sacral a
iliolumbar a
superior gluteal a.

Question 3

what does the umbilical/superior vesicular artery supply?

Answer 3

umbilical obliterates

superior vesicular does bladder

Question 4

what does the inferior vesicular artery supply?

Answer 4

bladder
ureter
seminal vesicle
prostate

Question 5

what does the middle rectal artery supply?

Answer 5

rectum, prostate, seminal vesicle in males

rectum and vagina in females

Question 6

what does the obturator artery supply?

Answer 6

pelvic muscles, head of femur, medial thigh

Question 7

what does the internal pudendal a supply?

Answer 7

all perineal structures

Question 8

what does the inferior gluteal a supply?

Answer 8

piriformis, pelvic diaphragm, gluteus maximus, sciatic nerve

Question 9

what does the uterine artery supply? what does it anastomose with?

Answer 9

uterus, superior vagina, ligaments of uterus

with ovarian a

Question 10

what does the vaginal a supply?

Answer 10

anterior and posterior vagina

Question 11

what does the lateral sacral artery supply?

Answer 11

piriformis, enters anterior sacral foramina and supplies structures of sacral canal –> posterior sacral foramina to erector spinae muscles

Question 12

what does the iliolumbar artery supply?

Answer 12

psoas major, iliacus, quadratus lumborum, cauda equina, vertebral canal

Question 13

what does the superior gluteal a supply?

Answer 13

gluteus medius, minimus and tensor fascia lata

Question 14

What supplies the bladder?

Answer 14

superior/inferior vesicular

Question 15

what supplies the ureter?

Answer 15

inferior vesicular

Question 16

what supplies the rectum?

Answer 16

superior, middle, inferior rectal

Question 17

what supplies the uterus?

Answer 17

uterine a

Question 18

what supplies the vagina?

Answer 18

uterine a, middle rectal, vaginal

Question 19

What supplies the seminal vesicle?

Answer 19

inferior vesicular, rectal

Question 20

what supplies the prostate?

Answer 20

inferior vesicular, rectal

Question 21

what is the significance of the lateral sacral veins?

Answer 21

they anastomose with the internal vertebral plexus as a collateral pathway to the IVC

Question 22

what is important about pelvic veins?

Answer 22

they have no valves so its an easy pathway for metastatic cancer in pelvic organs

Question 23

what is the pathway of lymphatic drainage?

Answer 23

sacral nodes –> internal or common iliac nodes

internal and external iliac –> common iliac nodes –> lumbar nodes

Question 24

what spinal level is the sciatic nerve? what does it innervate? what muscle can compress it?

Answer 24

L4-S3
posterior thigh
piriformis

Question 25

what spinal level is the pudendal nerve? what does it innervate?

Answer 25

S2-S4

perineal structures

Question 26

what spinal level is the superior gluteal nerve? what does it innervate?

Answer 26

L4-S1

glute med, glut min

Question 27

what doe the inferior gluteal n innervate? spinal level?

Answer 27

L4-S2

glute max

Question 28

what is the coccygeal plexus? what does it innervate? what nerve does it give rise to/

Answer 28

anterior rami of S4-S5-Co
innervates pelvic floor muscles
gives rise to anococcygeal n that supplies skin between tip of coccyx and anus

Question 29

what is the pathway of sympathetic innervation in the pelvis?

Answer 29

L3-L5 lumbar splanchnic nerves –> superior hypogastric plexus –> hypogastric nerve –> inferior hypogastric plexus –> prostate, vesicle, uterus, vagina, rectum

Question 30

what is the pathway of parasympathetic innervation in the pelvis?

Answer 30

S2-S4 pelvic splanchnic nerves –> inferior hypogastric plexus –> prostate, vesicle, vag/uterus, rectum

Question 31

what are pelvic nerve plexuses?

Answer 31

branches from the inferior hypogastric plexus that forms sub plexus on its organ

Question 32

what can causes sciatic nerve issues? symptoms?

Answer 32

herniated disc/piriformis compression
pain in posterior thigh
weakness in hamstrings and calves

Question 33

what can cause injury to the superior gluteal nerve? symptoms?

Answer 33

shit intramuscular injection in wrong region

causes trendelenburg thing

Question 34

what causes injury to inferior gluteal nerve? sx?

Answer 34

posterior hip dislocation

difficulty climbing stairs or extending hip

Question 35

what causes injury to the pudendal nerve? sx?

Answer 35

stretch during childbirth
decreased sensation in perineum and genital area, fecal or urinary incontinence
blocked with local anethstetic during childbirth

Question 36

what must you be cautious of during a hysterectomy?

Answer 36

the uterine artery runs posterior to the ureters, gotta be careful not to clamp em or cut em off