Perineum

Question 1

What does line the connects the isial tuberosities seperate

Answer 1

Separates it into 2 triangles

Urogenital triangle and anal triangle

Question 2

What are the borders of the perineum (ant, antlat, lat, postlat, post)

Answer 2

ant- pubic symphysis

Antlat- ischiopubic rami

Lat- ischial tub

postlat- sacrotub ligs

Post- coccyx

Question 3

Where is the sischioanal fossa located and what are the borders (med, lat, supermed)

Answer 3

On both sides of anus

Lat- ischium, obturator internees

Med-ext anal sphincter

Supermed- Lev ani

Question 4

What are the contents of the ischioanal fossa (4)

Answer 4

1. ishioanal fat pad
2. int pudendal aa and v
3. pudendal n
4. inf anal neurovascular bundle

Question 5

where does the pudendal n end and what does it supply

Answer 5

Ends as inf rectal n (supplies ext anal spincter)

Question 6

what aa supplies above and below pectinate line of anal canal

Answer 6

middle mesenteric above

Internal iliac aa below

Question 7

where does veinous drainage from above pectinate line and below

Answer 7

above- to portal venous system (drugs go st8 to liver)

below-canal venous system

Question 8

where does lymphatics go from above pectinate line and below

Answer 8

above- to int iliac

below- superficial inguinal lymph nodes

Question 9

Inn of above and below pectinate line

Answer 9

above- autonomic inn

below- somatomotor and somatosensory

Question 10

Where is the superficial perineal pouch located

Answer 10

located between perineal fascia and perineal membrane bounded lat by ischiopubic rami

Question 11

What is the contents of the superficial perineal pouch in males(5)

Answer 11

• root(bulb and crux)of the penisand associated muscles (ischiocavernosusandbulbospongiosus).
• proximal (bulbous) part of thespongy urethra.
• superficial transverse perineal muscles.
• deep perineal branchesof the internal pudendal vessels and pudendal nerves.

Question 12

What is the contents of the superficial perineal pouch in females

Answer 12

• clitorisand associated muscle (ischiocavernosus).
• bulbs of the vestibuleand surrounding muscle (bulbospongiosus).
• greater vestibular glands.
• superficial transverse perineal muscles.
• related vessels and nerves (deep perineal branchesof the internal pudendal vessels and pudendal nerves).

Question 13

Where is the deep perineal pouch found (inf, sup, lat)

Answer 13

Inf- perineal membrane
Sup- inf fascia of pelvic diaphragm
Lat- inf portion of obturator fascia

Question 14

What is found in both sexes in the deep perineal pouch

Answer 14

• part of the urethra
• Inf part of ext urethral sphincter muscle
• Ant ext of ischioanal fat pads

Question 15

What is also found in the deep perineal pouch in males (4)

Answer 15

• intermediate part of the urethra
• deep transverse perineal muscles
• bulbo-urethral glands
• dorsal neurovascular structures of the penis.

Question 16

What is also found in deep perineal pouch in females (3)

Answer 16

• proximal part of theurethra.
• a mass of smooth muscle in the place of deep transverse perineal muscles
• dorsal neurovasculature of the clitoris.

Question 17

What are the 3 muscles of the sup perineal pouch

Answer 17

1. Superficial transverse perineal mm
2. Bulbospongiousus
3. Ischiocabernosis

Question 18

What is the great vestibular glad used for and where is it located

Answer 18

under bulb of vestibule (which is on either side of vagina)

-used to lube opening of vag

Question 19

what are the 2 muscles of the deep perineal pouch

Answer 19

1. Deep transverse perineal mm—o- medial surface of ishiopubic ramaus, i- central tendon of perineurum,
2. Spinchter urethrea (compressor urethrae)- for tonicity of urethra

Question 20

What does the sacral nerve plexus create

Answer 20

Pudendal n

Question 21

What is the route of the pudendal nerve

Answer 21

leaves pelvis thru infrapiraform space, and renters pelvis thru lesser sciatic notch and goes to pudendal canal

Question 22

What are the branches of the pudendal n (4)

Answer 22

• Gives off inf anal n before it enters pudendal cana
• Superfical branches (for skin)
• Deep branches (Parneal mm)
• terminal is n inn dorm of penis/clit

Question 23

What would pudendal n entrapment in pudendal canal lead to

Answer 23

numbness in penis, scrotum, labia major and urinary incontinence

Question 24

What is the blood supply of this area

Answer 24

Internal pudendal aa

inf rectal, perineal, post scrotal, bulbous a, deep a of penis, dorsal aa of penis