Intermediate Lesser (True) Pelvis Quiz

Q1. Which landmark forms the posterior midline boundary of the pelvic inlet?

• Sacral promontory
• Ischial tuberosity
• Sacral hiatus
• Coccygeal apex

Q2. Which line of the ilium contributes to the pelvic inlet?

• Posterior gluteal line
• Inferior gluteal line
• Intertrochanteric line
• Arcuate line

Q3. Which part of the pubis contributes to the pelvic brim?

• Obturator groove only
• Inferior pubic ramus only
• Pubic tubercle only
• Pecten pubis

Q4. Which muscle covers much of the lateral wall of the lesser pelvis?

• Iliacus
• Rectus femoris
• Gluteus maximus
• Obturator internus

Q5. Which muscle contributes prominently to the posterolateral wall of the lesser pelvis?

• Adductor longus
• Sartorius
• Piriformis
• Pectineus

Q6. Which structures form the principal muscular floor of the lesser pelvis?

• Levator ani and coccygeus
• Piriformis and iliacus
• Gluteus maximus and medius
• Rectus abdominis and transversus abdominis

Q7. Which bony landmarks project medially into the lesser pelvis and are important obstetric reference points?

• Anterior superior iliac spines
• Ischial spines
• Pubic tubercles
• Iliac tubercles

Q8. Which structures form important lateral boundaries of the pelvic outlet?

• Sacral alae
• Anterior superior iliac spines
• Pubic tubercles
• Ischial tuberosities

Q9. Which structure forms the anterior boundary of the pelvic outlet?

• Iliac crest
• Greater sciatic notch
• Sacral promontory
• Pubic arch

Q10. Which statement correctly distinguishes the lesser pelvis from the greater pelvis?

• The lesser pelvis lies below the pelvic brim and contains the pelvic cavity
• The greater pelvis forms the principal birth canal
• The lesser pelvis lies above the pelvic brim
• The lesser pelvis is formed entirely by the ilia