nerves, BV and lymphatics of perineum

Question 1

Where does the pudendal nerve originate

Answer 1

Sacral plexus (S2-S4)

Question 2

What are the terminal branches of the pudendal nerve?

Answer 2

Inferior rectal
Perineal
Dorsal nerve of penis or clitoris

Question 3

What does the inferior rectal nerve inervate

Answer 3

Ex. anal sphincter
Sensory for skin of anal triangle
regions of levator ani

Question 4

What does the perineal nerve supply

Answer 4

Motor branches supply skeletal muscles in the superficial and deep perineal pouches

Sensory - posterior scrotal nerve/posterior labial nerve

Question 5

What does the dorsal nerve of penis/clitoris innervate?

Answer 5

body or clitoris or penis (particularly the glans)

Question 6

Apart from the 3 main terminal branches of the pudendal nerve, what are other nerves found in the perineum

Answer 6

Somatic sensory nerves - Branches of ilioinguinal, genitofemoral cutaneous and annococcygeal nerves

Question 7

Cover and say

Answer 7

Question 8

cover and say

Answer 8

Question 9

Name the arteries entering the perineum

Answer 9

Internal pudendal
External pudendal
testicular
cremasteric

Question 10

What are the branches of the internal pudendal artery>

Answer 10

Inferior rectal artery
perineal artery
branches to erectile tissue of penis/clitoris

Question 11

What happens to the inferior rectal artery

Answer 11

It anastamoses with the superior and middle rectal arteries to form a network of vessels that supply the rectum and anal canal.

Question 12

What happens to the perineal artery?

Answer 12

Gives of a transverse perineal branch and a posterior scrotal or labial artery

Question 13

What happens to the terminal part of the internal pudendal artery?

Answer 13

it accompanies the dorsal nerve of p/c into the depp perineal pouch and supplies branches to the tissues in deep perineal pouch and erectile tissue.

Question 14

What are the branches of the terminal part of the internal pudendal artery inside the deep perineal pouch? q

Answer 14

Artery to bulb of penis
Urethral artery
deep artery of the penis
Dorsal artery of the penis

Question 15

What does the artery of bulb of penis supply

Answer 15

Bulbourethral gland

corpus spongiosum

Question 16

what does the urethral artery supply

Answer 16

Penile urethra and surrounding erectile tissue to the glans

Question 17

What does the deep artery of the penis supply

Answer 17

crus

corpus spongiosum

Question 18

What does the dorsal artery of the penis supply

Answer 18

Glans of the penis

Superficial tissues of penis

Question 19

What does the external pudendal artery supply

Answer 19

related skin of the penis/scrotum, clitoris/labia majora

Question 20

Describe the course of the testicular arteries

Answer 20

originate in abdomen from aorta
descend to scrotum through inguinal canal
supply the testes

Question 21

Describe course of cremasteric arteries

Answer 21

Originate from inferior epigastic branch of external iliac artery
Accompany spermatic cord into the scrotum

Question 22

What is the contents of the spermatic cord

Answer 22

ductus deferens (vas deferens),
the testicular artery and the pampiniform plexus of veins.
the cremasteric artery,
the artery to the vas,
nerve to the cremaster,
sympathetic nerves and the lymphatics of the testis and epididymis.

Question 23

What part of perineum drain into internal iliac nodes

Answer 23

Deep parts of the perineum

Question 24

What part of perineum drains into superficial inguinal nodes

Answer 24

Penis/clitoris

Scrotum/labia

Question 25

what parts of perineum drain into deep inguinal and external iliac nodes

Answer 25

Glans penis, Glans clitoris, labia minora, terminal inferior end of vagina

Question 26

Where do the testes drain?

Answer 26

via channels that ascend in the spermatic cord, pass through the inguinal canal and course up the posterior abdominal wall and connect directly with the lateral aortic or lumbar nodes AND pre-aortic nodes around the aorta

Question 27

Answer 27

Question 28

Answer 28

Question 29

Answer 29

Question 30

What does the genitofemoral nerve supply

Answer 30

Upper anterior thigh, as well as the skin of the anterior scrotum in males and Mons pubis in females.

Question 31

What is the contents of the inguinal canal in male

Answer 31

Spermatic cord (with the genital branch of the genitofemoral nerve) and the ilioinguinal nerve

Question 32

What is root value of genito femoral nerve

Answer 32

L1-L2

Question 33

What is the contents of the inguinal canal in female

Answer 33

Round ligament
Genital branch of the genitofemoral nerve
Ilioinguinal nerve