Autonomics of the Pelvis and Perineum Flashcards Preview

Endo Exam 2 > Autonomics of the Pelvis and Perineum > Flashcards

Flashcards in Autonomics of the Pelvis and Perineum Deck (31):
1

plexus

contains both S and PS

2

celiac plexus

foregut

3

superior mesenteric plexus

to midgut

4

suprarenal and renal plexus

to kidney, adrenals, ureters

5

inferior mesenteric plexus

to hindgut

6

superior hypogastric plexus

ureters
connects abdominal and pelvis plexuses

7

inferior hypogastric plexus**

to pelvis

continuation of superior hypogastric plexus via hypogastric nerves

lateral surfaces of rectum and pelvic viscera

PS and S fibers

8

sympathetic efferents to pelvis

vasoconstriction
contraction of sphincters
inhibition of peristalsis
inhibition of glandular secretions

9

parasympathetic efferents to pelvis

vasodliation
peristalsis
contraction of detrusor muscle of bladder and myometrial muscle of uterus

10

sensory fibers to pelvis

travel with both PS and S to return info about pain and distention to spinal cord

11

subsidiary plexuses

carry fibers to viscera

rectal, vesicle, uterovaginal, prostatic

12

plexuses contain

preganglionic PS fibers
pre and post sympathetic S fibers
prevertebral sympathetic ganglia

13

splanchnic nerves

mainly preganglionic sympathetic
-greater, lesser, least, lumbar, sacral

-except cardiopulmonary - postgang sympathetic
-and pelvic - pregang parasympathetic

14

cardiopulmonary splanchnic

postganglionic sympathetic

15

pelvic splanchnic

preganglionic parasympathetic

16

vagus

preganglionic parasympathetic

17

splanchnics to inferior hypogastric plexus**

lumbar splanchnic
sacral splanchnic
pelvic splanchnic

18

sympathetics to pelvis and pernineum

lumbar splanchnic
sacral splanchnic

preganglionic sympathetics

19

parasympathetic to pelvis and perineum

pelvic splanchnic

preganglionic parasympathetic

20

innervation to pelvis and perineum

superior hypogastric plexus - at aortic bifurcation
-travel as right and left hypogastric nerves

form inferior hypogastric plexus - lateral surfaces of viscera

21

pelvic splanchnic nerves

parasympathetic
-preganglionic
-lateral horns S2,3,4
-exit at ventral root - to vental ramus

hindgut and pelvic viscera**

postganglionic in wall of organs they innervate

22

lumbar splanchnic nerves

major route** of sympathetics to pelvis

preganglionic fibers T11-L2

ventral root to white ramus - pass sympathetic chain to prevertebral ganglia

inferior mesenteric and inferior hypogastric ganglia

23

sacral splanchnic nerves

minor route** of sympathetics to pelvis

preganglionic fibers T12-L2

ventral root to white ramus - pass sympathetic chain to prevertebral ganglia

inferior hypogastric ganglia

24

hypogastric nerves

major source of sympathetics from lumbar splanchnic nerves

if severed, problems

25

lesion of sacral splanchnic nerves

only a minor route

26

sacral splanchnic nerves

reach inferior hypogastric plexus via descending through sympathetic chain to pelvis

27

sacral splanchnics

from sympathetic chain

28

lumbar splanchnics

via hypogastric nerve

29

pelvic splanchnics

from sacrum nerves

30

cavernous nerves

parasympathetic to perineum

-continuation of pelvic splanchnic nerves**

31

pudendal nerve

sympathetic to perinuem
-S2,3,4,

postganglionic fibers