Intermediate Iliacus Quiz

Q1. Besides the iliac fossa, which nearby region can contribute to the origin of iliacus?

• Fibular head only
• Inner iliac crest and nearby sacroiliac region
• Posterior calcaneus
• Intercondylar fossa of the femur

Q2. Which fascial layer covers iliacus within the pelvis?

• Thoracolumbar fascia only
• Crural fascia
• Plantar fascia
• Iliac fascia

Q3. What is the relationship of the femoral nerve to iliacus beneath the iliac fascia?

• It pierces the center of the iliacus tendon
• It lies along the medial side of iliacus between iliacus and psoas major
• It lies within the obturator canal
• It runs superficial to the inguinal ligament

Q4. Which root values are most commonly associated with the femoral nerve branches supplying iliacus?

• L2 and L3
• L4 and L5 only
• S3 and S4
• S1 and S2

Q5. What is the relationship of iliacus to the lateral part of the femoral triangle floor?

• It forms the medial boundary of the triangle
• It contributes to the lateral floor of the femoral triangle
• It forms the lateral boundary of the popliteal fossa
• It forms the roof of the femoral triangle

Q6. What separates the iliopsoas tendon from the anterior hip joint region and reduces friction?

• Iliopsoas bursa
• Subcutaneous calcaneal bursa
• Ischial bursa
• Prepatellar bursa

Q7. How does iliacus differ from psoas major in its proximal skeletal attachment?

• Iliacus arises from the pelvis rather than the lumbar vertebrae
• Iliacus arises from the ischial tuberosity
• Iliacus arises from lumbar transverse processes
• Iliacus arises only from the femur

Q8. What happens to iliacus when it contracts while the pelvis is relatively fixed?

• It plantarflexes the ankle
• It extends the knee
• It flexes the femur at the hip
• It extends the femur at the hip

Q9. Which structure is lateral to the femoral nerve beneath the inguinal ligament?

• Pectineal ligament
• Iliopsoas muscle
• Femoral vein
• Lacunar ligament

Q10. Why can iliacus be considered both a pelvic and lower-limb muscle anatomically?

• It originates in the pelvis and crosses the hip to the femur
• It crosses both the knee and ankle
• It lies entirely within the abdominal cavity
• It attaches only to the lumbar spine