14. Bony Pelvis and Pelvic Wall

Question 1

Where do the os coxae articulate with one another

Answer 1

Anteriorly- pubic symphysis

Posteriorly- sacroiliac joints

Question 2

What structure in the os coxae is the union of the three segments

Answer 2

Acetabulum

Question 3

What structure divides the pelvis major (false pelvis) from the pelvis minor (true pelvis)

Answer 3

Pelvic brim

Question 4

What makes up the lateral pelvic wall

Answer 4

1. Part of the hip bone below the pelvic inlet (brim)
2. Obturator internus and its covering fascia and obturator fascia
3. Sacrotuberous ligament
4. Sacrospinous ligamnet

Question 5

What muscles make up the levator ani and pelvic diaphragm

Answer 5

Levator ani- iliococcygeus, puborectalis and pubococcygeus

Pelvic diaphragm- levator ani and coccygeus

Question 6

The piriformis and obturator internus attach to the greater trochanter. What is their path to get there

Answer 6

Piriformis- exits through greater sciatic foramen

Obturator Internus- exits through lesser sciatic foramen

Question 7

What are the three layers that make up pelvic fascia

Answer 7

• Diaphragmatic fascia
• Visceral fascia
• Parietal fascia

Question 8

What are some types of Incontinence

Answer 8

Overflow- urethral blockage so bladder does not empty properly
Stress- relaxed pelvic floor and increased abdominal pressure
Urge- bladder over sensitivity from infection or neurologic disorders

Question 9

What are some examples of causes of incontinence in males

Answer 9

Stress- after prostate removed
Urge- overactive bladder
Overflow- blocked urethra due to BPH

Question 10

What muscle can be torn/damaged in childbirth

Answer 10

Pubococcygeus and puborectalis

Question 11

When someone is in anatomical position what aspects of the pelvis are in the same vertical plane

Answer 11

• R/L Anterior Superior Iliac Spines

- Anterior Aspect of the Pubic Symphysis