Lecture 24 (7-7-14)

Question 1

What are the walls of the pelvic cavity and what does each one contain?

Answer 1

Lateral wall (1)

• “hip bones”
• Obturator m, n, a, v

Anterior walls (2)

• pubic bones and pubic symphasis

Posterior wall (3)

• sacrum and coccyx
• sacroiliac joints
• sacrial plexus
• periform plexus

Floor (4)

• pelvic diaphragm

Question 2

Obturator internus

Answer 2

• Medial surface of obturator membrane–> leave true pelvis through the lesser sciatic foramen –> (turn 90 degrees) freater trochanter of femur
• nerve to obturator internus (L5-S2)
• lateral/ external rotation of hip

**in lateral wall of the pelvis**

Question 3

Piriformis

Answer 3

• leaves the pelivs through the greater sciatic formen–> insert on femur
• S1-S2
• external/ lateral rotation of the hip

bed for the nerves of the sacral plexus

posterial pelvic wall

Question 4

1. What does the pelvic floor do?
2. What does it include on the bottom?
   
   1. what makes this up?

Answer 4

1. sling that supports the abdominopelivic viscera. and it resist in intra-abdomincal pressure
2. Pelvic diaphragm
   
   1. Levator ani muscles (green)
      
      1. puborectalis
      2. pubococcygeus
      3. iliococcygeus
   2. coccygeus aka ischiococcygeus (Red)

Question 5

What structers enter/ leave the pelvis at these levels?

1. Above the piriformis
2. Below the piriformis
3. Greater sciatic foramen
4. Lesser foramen

Answer 5

1. Above: superior gluteal n & a
2. Below:
   
   1. ​inferior gluteal n & a
   2. sciatic nerve
   3. Pudendal n
   4. internal pudendal artery
3. Out Greater sciatic foramen
   
   1. ​obturator muscle tendon
   2. pudendal veins
4. Back in lesser sciatic foramen
   
   1. ​pudendal n
   2. interal pudendal a

Question 6

1. What does the urogenital diaphragm contain?
2. Where is it?
3. What does it do?

Answer 6

1. nerves, arterise, and glands for the external genitailia
2. below the inferor border on teh pelvic diagphrams muscles
3. seperates perineum into superfical and deep pouches.

Question 7

What is the the fascia around the testie?

Answer 7

Tunica albuginea

Question 8

What seperates the urogential triangle into the superfical and deep pouches?

Answer 8

Perineal membrane

Question 9

What are the contents of the superficial perineal space

Answer 9

• Bulbospongious muscles
• ischiocavernous muscles
• Perineal membrane
• Pelvic diapgragh (levator ani muscles)
  
  • inferior surface of the pelvic diaphragm
• Superficial transverse pernieal muscle
• Colle’s fascia (superficial perineal fascia)
• suspensory ligament of clitoris/ penis
• external anal sphincter

Finish this after more studying!

Question 10

What are the contents of the Deep perineal pouch?

Answer 10

• sphincter urethra m
• sphincter urethrovaginalis
• deep transverse perineal muscles
• compressor urethrae
• opening for vagin
• ​opening for urethra

bold= only in females

Question 11

What is in the superficial perineal pouch in males?

Answer 11

• 2 corpora cavernosm
• corpus spongiosum
• ischiocavermosus muscles
• Bulbospongiosus m.
• perineal membrane
• crus of penis
• bulb

Question 12

What are the contents of the deep male perineal pouch?

Answer 12

• perineal membrane
• cowpers glands
• external urethral spincter
• deep transverse perineal m.