Pelvic nerves and vessels

Question 1

sciatic nerve

Answer 1

L4, L5. S1- 3

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

Question 2

Gluteal nerves

Answer 2

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

Inferior- L5, S1, S2

Question 3

Nerve to obturator internus

Answer 3

Direct from L5- S1

Question 4

Nerve to piriformis

Answer 4

Direct from S1-S2

Question 5

Levator ani

Answer 5

Direct from S4 and pudendal

Question 6

Coccygeus

Answer 6

Direct from S4, S5

Question 7

Pudendal nerve

Answer 7

S2-S4

Question 8

Where is the pudendal nerve present?

Answer 8

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

Question 9

What does the sympathetic chain do?

Answer 9

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

Question 10

What does the parasympathetic chain do?

Answer 10

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

Question 11

Name nerves supplying penis perineum

Answer 11

Dorsal nerve of penis

Cavernous nerves

Question 12

Origin and type of dorsal nerves of the penis

Answer 12

Pudendal nerve and somatic sensory and sympathetic

Question 13

Origin and type of cavernous nerves

Answer 13

prostatic nerve plexus

parasympathetic

Question 14

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

Answer 14

Perineal branch
Origin: pudendal nerve
Type: somatic motor

Question 15

Two nerves supplying perineum of scrotum

Answer 15

anterior scrotal

posterior scrotal

Question 16

Origin and type of anterior scrotal nerve

Answer 16

ilioinguinal, genitofemoral

somatic sensory

Question 17

Origin and type of poaterior scrotal nerve

Answer 17

perineal branch of pudendal

somatic sensory

Question 18

Nerve supplying anterior perineum in female

Answer 18

anterior labial

origin: ilioinguinaland genitofemoral
type: somatic sensory

Question 19

Nerve supplying posterior perineum in female

Answer 19

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

Question 20

Labia

Answer 20

Posterior labial
Origin: pudendal
Type: somatic sensory

Question 21

Orifice of vagina

Answer 21

deep branch

origin: pudendal
type: somatic sensory

Question 22

Perineal (superficial muscles)

Answer 22

muscular branches
origin: pudendal
Type: somatic motor

Question 23

Clitoris and deep perineal muscles

Answer 23

dorsal nerve of clitoris

origin: pudendal
type: somatic motor and sensory

Question 24

Bulb of vestibule and clitoris

Answer 24

cavernous nerve
Origin: utero-vaginal plexus
Type: parasympathetic

Question 25

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

Answer 25

L4

Question 26

What do the common iliac arteries divide into ?

Answer 26

Internal and external iliac arteries

Question 27

What do the internal iliac arteries divide into?

Answer 27

Anterior and posterior division

Question 28

Branches of anterior division of internal iliac?

Answer 28

``` Umbilical gives rise to superior vesicle Obturator Inferior vesicle Middle rectal Internal pudendal Inferior gluteal ```

Question 29

Branches of anterior internal iliac in males?

Answer 29

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

Question 30

Testicular arteries from the abdominal aorta at ...

Answer 30

L2

Question 31

Branches of anterior internal iliac in females?

Answer 31

Uterine vaginal internal pudendal

Question 32

Branches of posterior internal iliac division

Answer 32

iliolumbar lateral sacral superial gluteal

Question 33

Info on Obturator artery

Answer 33

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

Question 34

Info on Superior vesical artery

Answer 34

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

Question 35

Info on Ductus deferens artery

Answer 35

Origin: superior / inferior vesical Area: ductus deferens

Question 36

Info on Inferior vesical artery

Answer 36

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

Question 37

Info on middle rectal artery

Answer 37

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

Question 38

Info on Internal pudendal artery

Answer 38

Origin : internal iliac | Area: perineum and anal canal

Question 39

Info on inferior gluteal artery

Answer 39

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

Question 40

Info on Uterine artery

Answer 40

Origin: internal iliac Area: ureter, uterus and vagina

Question 41

Info on Vaginal artery

Answer 41

Origin: uterine Area: vagina and bladder

Question 42

Info on Iliolumbar artery

Answer 42

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

Question 43

Info on Lateral sacral artery

Answer 43

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