perineum

Question 1

location of perineum

Answer 1

inferior to the pelvic diaphragm and is bounded by the pelvic outlet

Question 2

boundaries of perineum include

Answer 2

anteriorly  : pubic symphysis   
posteriorly : coccyx   
lateral : ischial tuberosities 
anterolateral : schiopubic ramus

posterolateral : sacrotuberous ligament

Question 3

division of perineum

Answer 3

divide into two by line connected between the tuberosities making anterior urogenital triangle and posterior anal triangle

Question 4

contents of anterior urogenital triangle

Answer 4

bladder internal genitalia urethra

Question 5

contents of posterior anal triangle

Answer 5

rectum anus coccyx

Question 6

tunnel found in the obturator internus fascia located on the lateral wall of the ischiorectal fossa

Answer 6

pudendal canal

Question 7

wedge shaped fat filled space situated on each side of anal canal

Answer 7

ischioanal fossa

Question 8

medial to ischial tuberosities

Answer 8

ischioanal fossa

Question 9

contents of pudendal canal include

Answer 9

pudendal nerve internal pudendal vessels

Question 10

pudendal nerve arises from

Answer 10

ventral rami of S2, S3 & S4

Question 11

principal nerve supply to the perineum

Answer 11

pudendal nerve

Question 12

branches of pudendal nerve

Answer 12

inferior rectal nerve
perineal nerve
dorsal nerve of penis or clitoris

Question 13

inferior rectal nerve supplies

Answer 13

external anal sphincter and anal skin

Question 14

perineal nerve supplies

Answer 14

muscles of the urogenital triangle and scortum or labia majora

Question 15

dorsal nerve of penis or clitoris

Answer 15

supplies the body prepuce & glans of penis or clitoris

Question 16

internal pudendal artery arises from

Answer 16

the anterior division of the internal iliac artery

Question 17

principal arterial supply of the perineum

Answer 17

internal pudendal artery

Question 18

branches of internal pedundal artery

Answer 18

inferior rectal artery 
perineal artery 
artery of the bulb of the penis or clitoris
deep artery of the penis or clitoris
dorsal artery of penis or clitoris

Question 19

blood supply to the skin & muscle of lower anal canal

Answer 19

inferior rectal artery

Question 20

blood supply to the perineal body & scrotum

Answer 20

perineal artery

Question 21

superficial fascia of urogenital triangle is divided into

Answer 21

• fatty layer and membraneous layer

Question 22

fatty layer of urogenital triangle

Answer 22

fascia of camper

Question 23

membraneous layer of urogenital triangle

Answer 23

colles fascia

Question 24

muscles that form the urogenital diaphragm

Answer 24

sphincter urethrae and deep transverse perineal

Question 25

location of the muscles of the urogenital diaphragm

Answer 25

enclosed between a superior and an inferior layer of fascia of the urogenital diaphragm(perineal membrane)

Question 26

laterally the layers of fascia are attached to the

Answer 26

pubic arch

Question 27

It is a fibromuscular mass located below the pelvic diaphragm between the anal canal & bulb of the penis or vagina

Answer 27

perineal body

Question 28

innervation of perineum

Answer 28

somatic nerves
Pudendal 
Ilioinguinal 
Genitofemoral 
Posterior femoral cutaneous.

Question 29

visceral nerve of the perineum

Answer 29

• postganglionic sympathetic fibers along the pudendal
  nerve
• inferior hypogastric plexus
• via pelvic splanchnic nerves from spinal cord levels of
  S2 to S4

Question 30

bloody supply the perineum

Answer 30

internal pedundal artery
inferior rectal artery
perineal artery
superficial and deep branches of the external artery

Question 31

branches of the internal pedundal artery

Answer 31

• artery of bulb of penis
• urethral artery
• two terminal branches
  deep artery of penis & dorsal artery of penis

Question 32

branches of the perineal artery

Answer 32

• transverse perineal branch

- posterior scrotal

Question 33

venous drainage of perineum

Answer 33

deep dorsal vein of the penis goes to prostatic venous plexus
superficial dorsal vein goes to superficial external pudendal vein