Anatomy of the Perineum 3

Question 1

What is the deep perineal pouch?

Answer 1

• Narrow space between two layers of the UG diaphragm
  
  • interior fascia of the urogenital diaphragm (perineal membrane) below (superficial)
  • superior fascia of the UG diaphragm above (deep)

Question 2

What are the contents of the deep perineal pouch?

Answer 2

• Deep transverse perineal muscle (skeletal muscle)
• External urethral sphincter (skeletal muscle)
• Membranous urethra
• Bulbourethral gland (in the male)

Question 3

What is the superficial perineal compartment?

Answer 3

• A pouch of the superficial body wall
  
  • scortum in the male
  • labia majora in the female

Question 4

What are the boundaries of the superficial perineal compartment?

Answer 4

• Enclosed by Colle’s fascia (in the male)
  
  • membranous layer continuous with Scarpa’s fascia of the abdominal wall
• Blood or urine in this space cannot pass into the high or anal region
  
  • only to the scrotum, around the penis, and upward to the abdominal wall between its superficial and deep components

Question 5

What are the structures found in the superficial perineal compartment in the male?

Answer 5

• Penis (attached via left and right crus and bulb)
• Bulbospongiosus muscle (skeletal)
• Ischiocavernosus muscle (around crura, skeletal)
• Superficial transverse pineal muscle (skeletal)
• Bulbourethral gland found in the deep pouch

Question 6

What are the structures found in the superficial perinal compartment in the female?

Answer 6

• Clitoris (with a body and left and right crus)
• Bulbospongiosus muscle (skeletal)
• Ischiocavernosus msucles (around crura, skeletal)
• Vestibular bulb (within bulbospongiosus muscle)
• Greater vestibular gland

Question 7

What are the functions of the muscles found in the superficial perineal compartment?

Answer 7

• Superficial (and deep) transverse perineal muscles
  
  • help stabilize the perineal body
• Bulbospongiosus
  
  • expels semen and empties last drops of urine in the male
  • acts as a sphincter for the vagina in the female
• Ischiocavernosus (along with bulbospongiosus)
  
  • helps maintain erection by compressing veins