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Next Generation > Pelvic Vessels and Nerves > Flashcards

Pelvic Vessels and Nerves Flashcards

1
Q

name the three branches of the internal iliac arteries

A

umbilical a
caudal gluteal a
internal pudendal a

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2
Q

What does the internal pudendal a supply

A

Most of the pelvic viscera (prostatic/vaginal aa, ventral perineal region/labia/scrotum, clitoris/penis

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3
Q

Name the vessels in the female (1-10)

A
  1. Internal iliac
  2. Caudal gluteal
  3. Internal pudendal
  4. Ventral perineal
  5. Caudal rectal
  6. Artery o the clitoris
  7. Umbilical
  8. Vaginal
  9. Uterine
    10.Caudal vesical
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4
Q

Name the vessels of the male

A
  1. Internal iliac
  2. Caudal gluteal
  3. Internal pudendal
  4. Ventral perineal
  5. Caudal rectal
  6. Artery of the penis
  7. Umbilical
  8. Prostatic
  9. Artery of the ductus deferens
    10.Caudal vesical
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5
Q

Where is a common location for feline saddle thrombus

A

At termination of aorta (bifurcation) to block the external iliac arteries

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6
Q

Name the three lymph centers that drain the pelvic cavity

A

Lumbar
Iliosacral
superficial inguinal

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7
Q

What lymph nodes does the lumbar LC contain and where are they located

A

Lumbar aortic lnn along ar=orta and ca vena cava

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8
Q

What lymph nodes does the iliosacral LC contain

A

Medial iliac lnn
Hypogastric lnn
sacral lnn (inconstant)

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9
Q

Which lymph node is the main one responsible for draining the pelvic limbs/tail and pelvis viscera and wall

A

Medial iliac lnn

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10
Q

Where does the medial ilaic lnn go (efferent pathway)

A

to lumbar trunks to cisterna chyli

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11
Q

What is the hypogastric lnn also called

A

internal iliac lnn

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12
Q

What does the hypogastric lnn drain

A

reproductive organs

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13
Q

Which lymph nodes are absent in the cat

A

Hypogastric and sacral lnn

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14
Q

How many superficial lnn are on each side and what is unique about them

A

2 on each side
Right and left communicate directly

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15
Q

Name the gender specific terms for the superficial inguinal lc

A

male: scrotal lnn
female: mammary lnn

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16
Q

What does the superficial inguinal lc drain

A

abdominal wall including regional mammary glands
pelvis, medial thigh, stifle, crus, popliteal ln

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17
Q

Where doe the superficial inguinal go? (efferent pathway)

A

through inguinal canal to the medial iliac lnn

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18
Q
A

1, Lumbar aortic lymph node;
1′, lumbar trunks;
2, medial iliac nodes;
3, hypogastric node;
4, thigh muscles;
5, popliteal nodes;

19
Q

Name 6-11

A

5, cisterna chyli
6, lumbar aortic lnn
7, renal lnn
8, medial iliac lnn
9, hypogastric lnn
10, sacral nodes
11, deep inguinal (iliofemoral) lnn nodes (inconstant)

20
Q

The pelvic nerve is: parasymp, symp, or somatic?

A

parasymp

21
Q

The hypogastric nerve is: parasymp, symp, or somatic?

A

Symp

22
Q

The pelvic plexus is: parasymp, symp, or somatic?

A

parasymp and symp

23
Q

Describe the path of symp innervation from spine to plevic plexis in the pelvis

A

L2-L4
Lumbar splanchnic nn
Caudal mesenteric ganglion
hypogastric n
pelvic plexus

24
Q

Where is the pelvic plexus located

A

Paired right and left on lateral surface of rectum

25
Q

Name the target organs of the pelvic plexus

A

last part of desc. colon
- rectum and anal canal
- prostate gland & penis
- uterus, cervix, vagina and clitoris

26
Q

How do nerves in the pelvic plexus reach their target organs

A

Travel with blood vessels to target organs (run along vaginal/prostatic aa)

27
Q

Describe the path of parasymp innervation from spine to plevic plexis in the pelvis

A

S1-3
Pelvic n
some fibers to caudal mesenteric ganglio, rest to pelvic plexus

28
Q

Where does vagus n innervation stop and pelvic nerve takes over

A

Vagus supplies up to the left coplic flexure then rest of descending colon is pelvic

29
Q

Describe action of symp innervation on bladder

A

STORE urine
Detrusor M: Sympathetics relax (to fill), Internal Urethral Sphincter (IUS): Sympathetics contract

30
Q

Describe action of parasymp innervation on bladder

A

PEE
Detrusor M: parasympathetics contract (to evacuate)

31
Q

Describe somatic innervation on the bladder

A

Contract external urethral sphincter

32
Q
A

1) Lumbar splanchnic nn
3. Sacral nn
4. Pelvic n
5. Pelvic ganglia & plexus
7. Caudal mesenteric ganglion
9. Left hypogastric n

33
Q

Name the branches of the pudendal nerve

A

caudal rectal n
Perineal n (superficial perineal n, deep perineal n)
dorsal n of penis

34
Q
A

1) pudendal n
2) caudal rectal n
3) superficial perineal n
4) deep perineal n
5) dorsal n of the penis

muscles:
A: coccygeus
B: Levator ani
C: external anal sphincter
D: Bulbospongiosus

35
Q

What never type is pudendal and how is it formed

A

somatic sensory/motor
Ventra; branches of all 3 sacral spinal nn

36
Q

What does the pudendal nerve supply inside the pelvic region

A

Ext sphincter of UB
striated muscle wall of pelvic urethra

37
Q

What does the caudal rectal n supply and clin sig

A

Only supply to external anal sphincter muscle

Do not cut in anal sac excision or perineal hernia repair because will cause fecal incontinence if blaterally damaged

38
Q

What does the superficial perineal n supply

A

Sensory to skin of perineum and scrotum
Note: does NOT supply labia in females

39
Q

What does the deep perineal n supply

A

Motor to skeletal muscles of F/M repro tract and ext anal sphincter

40
Q

What does the dorsal nerve of the penis/clitoris supply

A

Sensory to along dorsum of root, body, and glans of penis and prepuce

Supplies homologous structures and labia in females

41
Q

What is the perineal reflex and what does it test

A

Light stimulation of perineum with forceps should bring sharp contraction of anal sphincter and flexion of tail

Tests integrity of sacral and coccygeal spinal cord

42
Q

Where is the genitofemoral nerve located and clin sig

A

Ventral L3/L4 and courses retroperitoneally to leave abdomen through inguinal canal

Found on lateral side of external iliac a

43
Q

Compare genitofemoral n in males vs females

A

Female: only GSA fibers (sensory only)

Male: GSA and GSE

GSA:

44
Q

Genitofemoral nerve clin sig and function

A

plays a role in descent of testes and important in cows as it supplies the udder

GSA fibers: sensory of parts of external genitali and medial thigh
GSE: motor to cremaster m in male dog (note: cremaster m is not under voluntary control and no cremaster m in cat)

Next Generation (8 decks)

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