Pubis Flashcards

Study the pubis, including its body, rami, symphyseal surface, bony landmarks, muscle attachments, articulations, and clinical anatomy.

Card 1 of 30Question

What is the pubis?

The anteroinferior component of the hip bone, contributing to the acetabulum and obturator foramen.

In This Section

1. What is the pubis?

The anteroinferior component of the hip bone, contributing to the acetabulum and obturator foramen.

2. What are the three principal anatomical parts of the pubis?

The body, superior ramus, and inferior ramus.

3. Which region of the acetabulum is formed by the pubis?

The anteroinferior portion.

4. What is the pubic symphysis?

A secondary cartilaginous joint connecting the bodies of the right and left pubic bones.

5. What type of cartilage forms the interpubic disc?

Fibrocartilage.

6. Which ligaments reinforce the pubic symphysis?

The superior pubic and inferior pubic (arcuate pubic) ligaments.

7. What is the pubic crest?

A ridge along the superior surface of the pubic body extending from the symphysis to the pubic tubercle.

8. Which abdominal muscle attaches to the pubic crest?

The rectus abdominis muscle.

9. What is the pubic tubercle?

A prominent bony projection at the lateral end of the pubic crest.

10. Which ligament attaches to the pubic tubercle?

The inguinal ligament.

11. What is the pecten pubis?

A sharp ridge along the superior pubic ramus forming part of the pelvic brim.

12. Which ligament attaches along the pecten pubis?

The pectineal ligament, also called Cooper's ligament.

13. Which muscle originates from the pecten pubis and adjacent superior pubic ramus?

The pectineus muscle.

14. Which bony landmark on the superior pubic ramus contributes to the iliopectineal eminence?

The iliopubic eminence at the junction of the ilium and pubis.

15. Which part of the pubis joins the ramus of the ischium?

The inferior pubic ramus.

16. What is the ischiopubic ramus?

The continuous bony bar formed by the inferior pubic ramus and ischial ramus.

17. Which opening is bounded anteriorly and medially by the pubis?

The obturator foramen.

18. What is the obturator groove?

A groove on the inferior surface of the superior pubic ramus that contributes to the obturator canal.

19. Which structures pass through the obturator canal?

The obturator nerve, artery, and vein.

20. Which thigh muscle originates from the body of the pubis near the pubic crest?

The adductor longus muscle.

21. Which muscle originates from the body and inferior ramus of the pubis?

The adductor brevis muscle.

22. Which muscle originates from the anterior surface of the pubic body and inferior pubic ramus?

The gracilis muscle.

23. Which portion of adductor magnus originates partly from the inferior pubic ramus?

The adductor portion of adductor magnus.

24. Which hip muscle originates partly from the external surface of the pubis around the obturator foramen?

The obturator externus muscle.

25. Which abdominal muscle attaches to the pubic crest and pecten pubis through its tendon?

The external oblique muscle, through its inguinal ligament and lacunar ligament extensions.

26. What is the role of the pubis in the pelvic ring?

It connects the two hip bones anteriorly and helps transfer forces across the pelvis.

27. What is osteitis pubis?

A noninfectious inflammatory condition involving the pubic symphysis and surrounding structures.

28. What is pubic symphysis diastasis?

Abnormal widening or separation of the pubic symphysis.

29. Which pubic fractures commonly occur in pelvic ring injuries?

Fractures of the superior and inferior pubic rami.

30. Why can displaced pubic fractures cause urinary tract injury?

The pubic bones lie close to the urinary bladder and urethra, which may be injured by displaced fragments or associated pelvic trauma.