Pelvic Nerves and Vessels Flashcards

1
Q

What does the common iliac artery divide into?

A

Internal and external branches

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2
Q

What vessel is highlighted?

A

The posterior division of the internal iliac artery

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3
Q

What vessels are highlighted?

A

The common iliac veins

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4
Q

What area does the inferior vesical artery supply?

A

Urinary bladder, ureter, seminal vesicle, prostate

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5
Q

At which vertebral level does the aorta bifurcate into common iliac arteries?

A

L4

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6
Q

What are the roots of the pudendal nerve?

A

S2, S3, S4

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7
Q

What area does the middle rectal artery supply?

A

Rectum, seminal vesicle and prostate

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8
Q

What type of nerve fibres are found in the inferior hypogastric plexus?

A

Sympathetic and Parasympathetic

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9
Q

What are the roots of the lumbosacral plexus?

A

L4 and L5

S1-S4

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10
Q

What are the nerve roots of the nerve to piriformis?

A

S1-S2

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11
Q

What area does the inferior gluteal nerve supply?

A

Levator ani, coccygeus, piriformis and gluteal region

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12
Q

What nerves innervate the gluteal muscles?

A

Superior gluteal - gluteus medius and minimus

Inferior gluteal - gluteus maximus

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13
Q

What is the innervation of Levator Ani?

A

Some direct fibres of S4 and the pudendal nerve

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14
Q

What are the nerve roots of nerve to the obturator internus?

A

L5-S1

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15
Q

What area does the uterine artery supply?

A

Ureter, uterus and vagina

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16
Q

What artery supplies blood to the pelvis?

A

The internal iliac arteries

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17
Q

Describe the path taken by the sciatic nerve from pelvis to leg

A

The sciatic nerve forms on the anterior surface of the piriformis muscle on the lateral internal wall of the pelvis
Passes out of the pelvis through the greater sciatic notch to reach the gluteal region
Passes down the posterior surface of the thigh

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18
Q

Where does the superior hypogastric plexus sit?

A

At the bifurcation of the aorta into the common iliac arteries

19
Q

What is the root value of the sciatic nerve?

A

L4, L5, S1, S2, S3

L4-S3

20
Q

What bony landmark is used as a reference point during a pudendal nerve block?

A

The ischial spine

21
Q

What is the equivilent of the inferior vesical artery in females?

A

Replaced by vaginal or uterine branches that also supply the bladder

22
Q

What are the branches of the posterior division of the internal iliac?

A

PILS

  • iliolumbar artery
  • lateral sacral artery
  • superior gluteal artery
23
Q

What are the branches of the anterior division of the internal iliac?

A

SOI VU MR PIG

  • Superior vesicle (a branch of the umbilical)
  • Obturator
  • Inferior vesical (males) / vaginal (females)
  • Uterine
  • Middle rectal
  • Inferior gluteal artery
24
Q

What artery is highlighted?

A

The external iliac artery

25
Q

Where do the inferior hypogastric plexuses sit?

A

Sits on the internal lateral wall of the pelvis (one on each side)

26
Q

What vessel is highlighted?

A

Internal iliac artery

27
Q

What area does the lateral sacral artery supply?

A

Vertebral canal and piriformis

28
Q

What area does the superior gluteal artery supply?

A

Levator ani, piriformis and gluteal region

29
Q

What are the nerve roots of the gluteal nerves?

A

Superior gluteal - L4, L5, S1

Inferior gluteal - L5, S1, S2

30
Q

What vessel is highlighted?

A

The anterior division of the internal iliac artery

31
Q

What vessel is highlighted in green?

A

The common iliac artery

32
Q

What type of nerve fibres are found in the inferior hypogastric plexus?

A

Sympathetic and Parasympathetic

33
Q

What does the pudendal nerve supply?

A

Levator Ani
External anal and External urethral sphincters
Bulbospongiosus
Ischiocavernosus

34
Q

True or False?

The superior hypogastric plexus contains both sympathetic and parasympathetic nerve fibres

A

False - contains just sympathetic fibres

35
Q

What area does the obturator artery supply?

A

Pelvic muscles, head of femur, ilium

36
Q

True or False?

The ovarian artery is a branch of the anterior division of the internal iliac

A

False

The ovarian artery is a direct branch of the abdominal aorta at level L2

37
Q

What area does the internal pudendal artery supply?

A

Perineum and anal canal

38
Q

What is the largest nerve of the sacral plexus?

A

Sciatic nerve

39
Q

Describe the path of the pudendal nerve to reach the perineum

A

It forms from nerve roots S2, S4 in the pelvis close to the pelvic floor
Passes through the greater sciatic foramen, around the ischial spine then through the lesser sciatic foramen where it then reaches the anal triangle and perineum

40
Q

What area does the iliolumbar artery supply?

A

Cauda equina, iliacus, psoas, quadratus lumborum

41
Q

What area does the vaginal artery supply?

A

Vagina and bladder

42
Q

What nerve roots supply the coccygeus muscle of the pelvic floor?

A

Direct fibres from S4, S5

43
Q

What area does the superior vesical artery supply?

A

Superior aspect of bladder and in males gives off a branch to supply the ductus deferens

44
Q

What regions does the sciatic nerve supply?

A

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