Os Coxae Labeling Quiz

1. Which indentation lies between the ischial spine and the ischial tuberosity?

2. Which bone forms the broad, superior portion of the os coxae?

3. Moving down the posterior border of the os coxae, a pointed projection appears between the greater and lesser sciatic notches. What is it?

4. On the internal surface of the ilium, which ridge contributes to the pelvic brim and separates the iliac fossa from the true pelvis?

5. A medial-view label points to the broad, smooth, concave area on the ala of the ilium. Which structure is labeled?

6. Which landmark forms the thick, curved superior border of the ilium?

7. A label marks the prominent anterior end of the iliac crest. Which landmark is it?

8. Which part of the pubis extends toward the acetabulum and contributes to the superior boundary of the obturator foramen?

9. A label points to the cup-shaped socket on the lateral side of the os coxae where the head of the femur articulates. Which structure is labeled?

10. On the medial side of the ilium, which ear-shaped articular area joins the sacrum at the sacroiliac joint?

11. A label points to an anterior projection of the ilium immediately above the acetabulum and below the anterior superior iliac spine. Which landmark is this?

12. When sitting upright, much of the body’s weight rests on which roughened landmark of each os coxae?

13. Which structure is the large opening enclosed primarily by the pubis and ischium?

14. Which medial surface of the pubis meets its counterpart from the opposite os coxae at the pubic symphysis?

15. A label sits at the interruption in the inferior rim of the acetabulum. Which feature should it identify?

16. A posterior-view label points to the large indentation above the ischial spine. What is the structure?