Intermediate Lesser (True) Pelvis Quiz

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

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

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

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

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

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

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?

• Sartorius
• Pectineus
• Piriformis
• Adductor longus

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

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

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

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

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

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

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

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

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

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