Lecture 22 - Blood Vessels, nerves and Lymph of Pelvis Flashcards Preview

Viscera & Visceral Systems > Lecture 22 - Blood Vessels, nerves and Lymph of Pelvis > Flashcards

Flashcards in Lecture 22 - Blood Vessels, nerves and Lymph of Pelvis Deck (31):
1

Where are the pelvic parasympathetics from?

S2-4

2

bracnhes from the side wall of the pelvis are from what artery?

internal iliac - will usually travel in with a NV bundle

3

the ovarian artery is a branch of what

abdo aorta

4

The superior rectal artery is continuation of what

inferior mesenteric artery

5

What do the parietal branches of internal iliac supply?

wall of the pelvis and sends some vessels into the gluteal region (not worrying about these as much)

6

The internal iliac artery is very...

variable! - look at the structure and work back

7

the superior vesical artery is reinforced by what in males?

what else does this supply

inferior vesicle branch

also supplies the vas, prostate, seminal vescicles

8

What is within the lateral cervical ligament?

uterine artery in females

comesin at level of cervix - crosses ureter

9

What happens to the uterine artery at the cervix?

splits - sends branch down to anastomose with the vaginal artery

sends branch up to meet the ovarian artery

10

vaginal artery is the female equivalent of what

inferior vesicals

11

inferior mesenteric artery is reinforced by..

middle rectal artery - coming off internal iliac in both sexes

12

The inferior rectal artery is a branch of the

pudendal vessels - goes to anal canal

13

obturator nerve is a branch of the

lumbar plexus - goes through obturator canal

14

obturator nerve will supply the parietal perineum, therefore pain will be referred to..

medial thigh above the knee

15

the sacral plexus is formed..

on piriformis with contribution from lumbo-sacral truck formed by L4 remnants

16

The two really important nerves from the sacral plexus are...

pudendal nerve - nerve of perineum

pelvic parasympathetics

17

What is the course of the pudendal nerve?

(S2-4) pelvis - through greater sciatic foramen - winds around ishial spine in gluteal region - back through the lesser sciatic foramen (now beneath the pelvic floor) - now into perineum

18

True or false

The pudendal nerve penetrates the pelvic floor

false - goes in from behind

19

once inside the perineum the pudendal nerve slips into the

pudendal canal

20

The first thing that the pudendal nerve does is

send branches to the anal canal - inferior rectal nerves

21

once beyond the anal triangle what branches are given off?

perineal nerves to sctrutures in the midline.

ends up at the apex of the triangle at the dorsal nerve of clitorus/penis

22

The pelvic sympathetic fibres reach the pelvis via...

superior hypogastric plexus which lies inferior to the bifurcation of aorta

23

superior hypogastric plexus (sympathetics) divides into a

Right and Left hypogastic nerves which descend laterally to rectum to join pelvic splanchnic nerves

24

the combination of pelvic splanchnic nerves and hypogastric nerves creates...

Right and Left inferior hypogastric plexus (an autonomic plexus of para/sympathetic nerves

25

The pelvic pain line (plane of least dimensions) - divides ...

the referral of pain

26

structures above the pelvic pain line will convey their pain

accompanying the sympathetic motor fibres - will go up to ant. abdo wall

27

Everything that has peritoneum draped over the top or related to the broad lig relates pain to the

ant. abdo wall T1-L2

28

structures below the pelvic pain line will convey their pain...

accompanying the parasympathetics - referred to the peri-anal region, buttocks

29

What are the componenets of the micturition reflex

1. Stretch receptors in bladder wall

2. Visceral afferents accompany pelvic parasymapthetics

3. Spinal cord segments S2-4

4. Visceral efferents (pelvic parasympathetics)

5. Detrusor muscle of bladder

30

How is micturtion started?

voluntarily relaxing the external urethral sphincter

31

WHAT NERVE is responsible for starting micturition

pudendal nerve