Advanced Pelvic Girdle Quiz

Q1. Which sequence correctly describes the principal pathway of body weight from the vertebral column to the lower limbs?

• Lumbar vertebrae, ilia, coccyx, femora
• Sacrum, pubic symphysis, patellae, femora
• Lumbar vertebrae, sacrum, sacroiliac joints, hip bones, acetabula, femora
• Lumbar vertebrae, coccyx, pubis, tibiae

Q2. Why is the sacrum often described as a keystone within the pelvic ring?

• It is wedged between the hip bones and distributes axial load
• It forms both acetabula
• It forms the anterior boundary of the pelvic outlet
• It is the most mobile bone of the pelvic girdle

Q3. Which structures together form the linea terminalis?

• Sacral promontory, arcuate line, pecten pubis, and pubic crest
• Sacral hiatus, iliac crest, and pubic tubercle
• Iliac crest, ischial spine, and acetabular rim
• Ischial tuberosity, coccyx, and obturator foramen

Q4. Which measurement extends from the sacral promontory to the superior border of the pubic symphysis?

• Anatomical conjugate
• Oblique diameter of the outlet
• Interspinous diameter
• Intertuberous diameter

Q5. Which pelvic diameter is measured between the ischial spines?

• Diagonal conjugate
• Anatomical conjugate
• Interspinous diameter
• External conjugate

Q6. Which change in the female pelvis generally facilitates childbirth?

• A narrower subpubic angle
• A substantially narrower pelvic cavity
• More medially projecting ischial spines
• A broader pelvic inlet and outlet

Q7. How do the sacrotuberous and sacrospinous ligaments contribute to pelvic girdle stability?

• They resist excessive sacral nutation
• They permit unrestricted sacral rotation
• They form the articular surfaces of the hip joints
• They separate the sacrum from the hip bones

Q8. Why can disruption of the posterior pelvic ring produce major instability?

• All body weight normally passes only through the pubic symphysis
• The posterior ring is a major load-bearing and stabilizing component
• The posterior ring has no ligamentous support
• The posterior ring is unrelated to the sacroiliac joints

Q9. What happens to the pelvic ring when a person sits upright?

• All load is transmitted directly to the pubic symphysis
• The acetabula become the only weight-bearing surfaces
• Load is transmitted toward the ischial tuberosities
• The sacrum no longer participates in load transmission

Q10. Which statement best integrates the anatomy and function of the pelvic girdle?

• It is designed primarily for unrestricted movement between its bones
• It consists of the paired hip bones and provides a stable connection for load transfer between the axial skeleton and lower limbs
• It forms the thoracic cage and supports the upper limbs
• It consists only of the sacrum and coccyx and has no role in locomotion