Pelvic nerves and vessels Flashcards

1
Q

sciatic nerve

A

L4, L5. S1- 3

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

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2
Q

Gluteal nerves

A

superior -(L4, L5.S1) gluteal to gluteus medius and minimus

Inferior- L5, S1, S2

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3
Q

Nerve to obturator internus

A

Direct from L5- S1

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4
Q

Nerve to piriformis

A

Direct from S1-S2

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5
Q

Levator ani

A

Direct from S4 and pudendal

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6
Q

Coccygeus

A

Direct from S4, S5

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7
Q

Pudendal nerve

A

S2-S4

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8
Q

Where is the pudendal nerve present?

A

Levator ani, ext anal and ext urethral sphincter, bulbospongious, ischiocavernosus

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9
Q

What does the sympathetic chain do?

A

Rectum > decreases movement
Contracts internal anal and urethral sphincters
Relaxes bladder detrusor
Ejaculation = contract ductus deferens and seminal vesicle
Uterus= relax/ contract
Vasoconstriction of arteries

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10
Q

What does the parasympathetic chain do?

A

Pelvic splanchnic nerves S2-4
Increase motility rectum and anal canal
Relax internal anal sphincter
Bladder = contracts detrusor and inhibits contraction of internal sphincter
No effect on seminal vesicles, ductus deferens, uterus

Vasodilation of arteries= erection

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11
Q

Name nerves supplying penis perineum

A

Dorsal nerve of penis

Cavernous nerves

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12
Q

Origin and type of dorsal nerves of the penis

A

Pudendal nerve and somatic sensory and sympathetic

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13
Q

Origin and type of cavernous nerves

A

prostatic nerve plexus

parasympathetic

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14
Q

Nerves suplying perineal muscles in male e.g bulbospongiousus , ischiocaverniosus

A

Perineal branch
Origin: pudendal nerve
Type: somatic motor

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15
Q

Two nerves supplying perineum of scrotum

A

anterior scrotal

posterior scrotal

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16
Q

Origin and type of anterior scrotal nerve

A

ilioinguinal, genitofemoral

somatic sensory

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17
Q

Origin and type of poaterior scrotal nerve

A

perineal branch of pudendal

somatic sensory

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18
Q

Nerve supplying anterior perineum in female

A

anterior labial

origin: ilioinguinaland genitofemoral
type: somatic sensory

19
Q

Nerve supplying posterior perineum in female

A

perineal branch
origin: posterior cutaneous of thigh pudendal
Type: somatic sensory

20
Q

Labia

A

Posterior labial
Origin: pudendal
Type: somatic sensory

21
Q

Orifice of vagina

A

deep branch

origin: pudendal
type: somatic sensory

22
Q

Perineal (superficial muscles)

A

muscular branches
origin: pudendal
Type: somatic motor

23
Q

Clitoris and deep perineal muscles

A

dorsal nerve of clitoris

origin: pudendal
type: somatic motor and sensory

24
Q

Bulb of vestibule and clitoris

A

cavernous nerve
Origin: utero-vaginal plexus
Type: parasympathetic

25
Q

What region does the aorta divide to give 2 common iliac arteries?

A

L4

26
Q

What do the common iliac arteries divide into ?

A

Internal and external iliac arteries

27
Q

What do the internal iliac arteries divide into?

A

Anterior and posterior division

28
Q

Branches of anterior division of internal iliac?

A
Umbilical gives rise to superior vesicle
Obturator 
Inferior vesicle 
Middle rectal 
Internal pudendal 
Inferior gluteal
29
Q

Branches of anterior internal iliac in males?

A

Inferior vesical and middle rectal supply prostate, seminal vesicles and ductus deferens

30
Q

Testicular arteries from the abdominal aorta at …

A

L2

31
Q

Branches of anterior internal iliac in females?

A

Uterine
vaginal
internal pudendal

32
Q

Branches of posterior internal iliac division

A

iliolumbar
lateral sacral
superial gluteal

33
Q

Info on Obturator artery

A

Origin: internal iliac
Area: pelvic muscles, head of femur, ilium

34
Q

Info on Superior vesical artery

A

Origin: Umbilical
Area: superior aspect of bladder, ductus deferens

35
Q

Info on Ductus deferens artery

A

Origin: superior / inferior vesical
Area: ductus deferens

36
Q

Info on Inferior vesical artery

A

Origin: internal iliac
Area: urinary bladder, ureter, seminal vesicle, prostate

37
Q

Info on middle rectal artery

A

Origin: internal iliac
Area: rectum, seminal vesicle and prostate

38
Q

Info on Internal pudendal artery

A

Origin : internal iliac

Area: perineum and anal canal

39
Q

Info on inferior gluteal artery

A

Origin: internal iliac
Area: levator ani, coccygeus , piriformis and gluteal

40
Q

Info on Uterine artery

A

Origin: internal iliac
Area: ureter, uterus and vagina

41
Q

Info on Vaginal artery

A

Origin: uterine
Area: vagina and bladder

42
Q

Info on Iliolumbar artery

A

Origin: internal iliac (posterior)
Area: cauda equina, iliacus , psoas, quadratus lumborum

43
Q

Info on Lateral sacral artery

A

Origin: internal iliac (posterior)
Area: vertebral canal and piriformis