Bony Pelvis and Landmarks

Question 1

Where separates the greater pelvis from the lesser pelvis?

Answer 1

The pelvic brim

Question 2

What is the pelvis major?

Answer 2

the false pelvis

Question 3

What is the pelvis minor?

Answer 3

the true pelvis

Question 4

What are the major differences between the male and female pelvis? (4)

Answer 4

• female pelvis is larger, broader
• male pelvis is taller (higher iliac crests)
• female inlet is larger, more oval
• male inlet is smaller, more heart-shaped

Question 5

What are the boundaries of the pelvic inlet? (5)

Answer 5

• posterior = sacral promontory
• posterolateral = margin of sacral ala
• lateral = arcuate line
• anterolateral = pecten pubis
• anterior = pubic crest and pubic symphysis

Question 6

What ligaments stabilize the sacroiliac joint? (3)

Answer 6

• anterior sacroiliac ligament
• posterior sacroiliac ligament
• interosseus ligaments

Question 7

What forms the lateral pelvic wall? (4)

Answer 7

• part of hip below pelvic inlet (body of pubis, superior and inferior rami, ischium, ischial spine)
• obturator internus m. and obturator fascia and obturator membrane
• sacrotuberous ligament
• sacrospinous ligament

Question 8

What 4 muscles make up the pelvic diaphragm?

Answer 8

• coccygeus
• iliococcygeus
• pubococcygeus
• puborectalis

Question 9

What muscles make up the levator ani muscle?

Answer 9

• iliococcygeus
• pubococcygeus
• puborectalis

Question 10

What typically causes overflow incontinence?

Answer 10

A blockage of the urethra so that the bladder can’t empty properly

Question 11

What typically causes stress incontinence? (2)

Answer 11

• Increased abdominal pressure

- a relaxed pelvic floor caused by removal of prostate gland/stretching of the muscles

Question 12

What typically causes urge incontinence? (2)

Answer 12

• bladder being oversensitive from infection (cystitis)

- neurological disorders

Question 13

What in the male can cause overflow incontinence?

Answer 13

BPH