Pelvic Nerves and Vessels Flashcards Preview

Gross Anatomy 2 > Pelvic Nerves and Vessels > Flashcards

Flashcards in Pelvic Nerves and Vessels Deck (32):
1

Sacral Plexus

2

Sciatic Nerve

Root value and supply to

L4,L5, S1-3

Posterior compartment of thigh and branches supply all the muscles of the leg/foot

3

Gluteal Nerves

Superior root value and supply

L4,L5,S1

Gluteal to gluteus medius and minimus

4

Gluteal Nerves

Inferior root value and supply to

L5, S1, S2

Gluteal to gluteus maximus

5

Nerve to obturator internus

Root value

Direct L5-S1

6

Nerve to piriformis

Root value

Direct from S1-2

7

Levator Ani

Innervation

Direct S4 and pudendal

8

Coccygeus

Innervation

Direct S4, S5

9

Pudendal nerve

Root value and supply to

S2-S4

Motor and sensory to levator ani, external anal and urethral sphincters, bulbospongosius and ischiocavernosus

10

Pudendal nerve route

11

Mesenteric and Hypogastric Plexuses

12

Sympathetic innervation to... does what?

Rectum

Decreases movement

13

Sympathetic innervation to... does what?

Internal anal and urethral sphincters

Contract

14

Sympathetic innervation to... does what?

Bladder detrusor

Relaxed

15

Sympathetic innervation during... does what?

Ejaculation

Contracts ductus deferens and seminal vesicles

16

Sympathetic innervation to... does what?

Uterus

Relaxes/contracts (hormonal)

17

Sympathetic innervation to... does what?

Arteries

Vasoconstriction

18

Parasympathetic innervation to pelvis

Supplied by

 

Pelvic splanchnic nerves S2-4

19

Parasympathetic innervation to... Does what?

Rectum and anal canal

Increases motility

20

Parasympathetic innervation to... Does what?

Internal anal sphincter

Relaxed

21

Parasympathetic innervation to... Does what?

Bladder

Contracts detrusor, inhibits contraction of internal sphincter

22

Parasympathetic innervation to... Does what?

Seminal vesicles, ductus deferens, uterus

Nothing

23

Parasympathetic innervation to... Does what?

Arteries

Vasodilation -> erection

24

Nerve supply to male perineum

25

Nerve supply to female perineum

26

Blood supply to pelvis

Comes from

Internal iliac arteries, which are brancehs of the common iliac arteries, which branch from the aorta at L4. Each internal iliac artery branches into an anterior and posterior division. 

27

Branches of anterior internal iliac

28

Anterior internal iliac in males

29

Anterior internal iliac for females

30

Posterior internal iliac

31

Blood supply to pelvic organs

32

Internal iliac veins