Osteology of Pelvis and Posterior Abdominal Wall

Question 1

What is the pelvic girdle made up of?

Answer 1

Sacrum

2 Hip Bones

Question 2

Which 3 bones fuse to form the hip bone?

Answer 2

Ilium
Ischium
Pubis

Question 3

How many vertebrae fuse to form the sacrum?

Answer 3

5

Question 4

What is the sacroiliac joint?

Answer 4

Where the sacrum meets the hip bone (specifically, the ilium)

Question 5

What is the acetabulum?

Answer 5

The region of the hip bone that articulates with the head of the femur

Question 6

What is the pubic symphysis?

Answer 6

Where the 2 hip bones meet

Question 7

What shape is the pelvic girdle?

Answer 7

Basin-shaped

Question 8

Which regions of the body does the pelvic girdle connect?

Answer 8

Vertebral column and lower limbs

Question 9

Where do the 3 bones of the hip bone meet?

Answer 9

At the acetabulum

Question 10

Which bones contribute to the obturator foramen?

Answer 10

Pubic bone and ischium

Question 11

Where are the sciatic notches found?

Answer 11

Above and below the ischial spine

Question 12

What bone region do we sit on?

Answer 12

The ischial tuberosities

Question 13

What makes up the pubic arch?

Answer 13

The inferior pubic rami

Question 14

At what vertebral level is the iliac crest found?

Answer 14

L4

Question 15

Where do the sciatic foramina provide routes to?

Answer 15

Gluteal and posterior thigh regions

Question 16

Which ligaments make up the sciatic foramina?

Answer 16

Sacrospinous ligament

Sacrotuberous ligament

Question 17

Which ligament from the sacrum is deeper?

Answer 17

Sacrospinous ligament

Question 18

Which direction does the sacrospinous ligament run?

Answer 18

Laterally

Question 19

Which direction does the sacrotuberous ligament run?

Answer 19

Inferiorly

Question 20

Which muscles make up iliopsoas?

Answer 20

Psoas major

Iliacus

Question 21

Where does psoas major originate?

Answer 21

Lumbar vertebrae: bodies, intervertebral discs, transverse processes

Question 22

Where does iliacus originate?

Answer 22

Iliac fossa

Question 23

Where does iliopsoas insert?

Answer 23

Lesser trochanter of femur

Question 24

Which actions does iliopsoas contribute to?

Answer 24

Flexes thigh at hip
Flexes vertebral column
Stabilizes hip joint

Question 25

What is psoas major innervated by?

Answer 25

L2 - L4 anterior rami

Question 26

Which nerve innervates iliacus?

Answer 26

Femoral nerve

Question 27

Where does quadratus lumborum lie in relation to psoas major?

Answer 27

Laterally

Question 28

Where does quadratus lumborum originate?

Answer 28

12th rib

Lumbar vertebrae: transverse processes

Question 29

Where does quadratus lumborum insert?

Answer 29

Iliac crest

Question 30

Which actions does quadratus lumborum contribute to?

Answer 30

Extends vertebral column
Laterally flexes vertebral column
Flexes 12th rib during inspiration

Question 31

What is quadratus lumborum innervated by?

Answer 31

Anterior rami of T12 - L4