2-15 Pelvic Girdle

Question 1

what are the three pelvic bones that fuse together

Answer 1

• ilium
• ischium
• pubis

these join together at the acetabulum.
fuse together at late adolescence

Question 2

gender differences between the pelvis

Answer 2

male
- thicker
- denser
- designed to support heavier build

female
- shorter
- wider
- thinner + less dense
- designed to fit all reproductive organs and allow for childbirth

Question 3

intervertebral disc

ligament

Answer 3

between L5 and sacrum, allows for little movement

Question 4

iliolumbar ligament

Answer 4

attachment: transverse process of L5 to crest of ilium

Question 5

sacroiliac ligament

Answer 5

attachment: sacrum to ilium
allows little movement, consists of:
- posterior: strong
- anterior: rotational stability
- interosseus: strong

Question 6

sacrococcygeal ligament

Answer 6

attachment: between the sacrum and coccyx
- allows for some movement
- consists of lateral, posterior and anterior
- contains intervertebral disc between S5 and C1

Question 7

pubic ligament

Answer 7

forms pubic symphysis (between pubic bones)
- fibrocartilage disc
- prevents some expansion during childbirth

Question 8

sacrotuberous ligament

Answer 8

iliac spines + sacrum to the ischial tuberosity

provides vertical stability

Question 9

sacrospinous ligament

Answer 9

attachment: ischial spine to sacrum + coccyx

divides sciatic notch into greater and lesser sciatic foramina

Question 10

what is the sacrum

Answer 10

a fusion of five sacral vertebrae of the spine

Question 11

what is the sacrum

Answer 11

a fusion of five sacral vertebrae of the spine