The Perineum and External Genitalia - Not Finished, Listen to Lecture

Question 1

How does pelvic shape vary with males and females?

Answer 1

Females have a more round pelvic inlet

Males have a more heart-shaped pelvic inlet

Females have straighter, shorter ischial spines

** Males have more medial pointed ischial spine**

Question 2

Describe true vs false pelvis

Answer 2

False pelvis is larger, more superior, part of abdominal cavity, contains ileum and sigmoid colon

True pelvis is actual hole between pelvic inlet and outlet. Contains rectum, bladder, genitals

Question 3

Describe the contents of the pelvic floor

Answer 3

** Contains levator ani and coccygeus muscles**

Genital hiatus anteriorly

Anal canal posteriorly

Obturator canals laterally

Question 4

Name the 3 levator ani muscles

Answer 4

** Puborectalis**

Pubococcygeus

Iliococcygeus

(medial to lateral)

Question 5

Describe the pelvic wall

Answer 5

** Comprised of obturator internus and piriformis**

Question 6

How is the deep perineal space bounded?

Answer 6

Bounded by superficial fascia and inferior fascia (Perineal Membrane)

Question 7

What does the deep perineal space contain?

Answer 7

External urethral sphincter

** Deep transverse perineal muscle**

Bulbourethral (Cowper’s) gland

Blood vessels, nerves, lymphatics

Question 8

What are the boundaries of the superficial perineal space?

Answer 8

Perineal membrane (from deep perineal space) above and Colle’s fascia below

Question 9

What is contained in the superficial perineal space?

Answer 9

** Roots of the penis, muscles, and nerves.**