Intermediate Pectineus Quiz

Q1. Which specific pubic landmark gives origin to pectineus?

• Pecten pubis
• Pubic tubercle only
• Anterior superior iliac spine
• Ischial spine

Q2. Where is the pectineal line of the femur located relative to the lesser trochanter?

• Superior to the greater trochanter
• On the lateral femoral condyle
• Inferior to the lesser trochanter
• Within the intercondylar fossa

Q3. Which root levels commonly contribute to femoral nerve innervation of pectineus?

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

Q4. What part of the femoral triangle floor is formed by pectineus?

• Roof only
• Medial portion of the floor
• Superior border
• Lateral border

Q5. Which major vessels pass anterior to pectineus in the femoral triangle region?

• Anterior tibial vessels
• Femoral artery and vein
• Popliteal artery and vein
• Dorsalis pedis vessels

Q6. Which artery commonly contributes to the blood supply of pectineus?

• Posterior tibial artery
• Dorsalis pedis artery
• Fibular artery
• Medial circumflex femoral artery

Q7. Why is pectineus sometimes described as a transitional muscle between thigh compartments?

• It is part of the quadriceps tendon
• It lies entirely in the posterior compartment
• It crosses both knee and ankle
• Its position and innervation show both anterior and medial compartment features

Q8. Which nerve can provide an additional or alternative supply to pectineus?

• Obturator or accessory obturator nerve
• Tibial nerve
• Superior gluteal nerve
• Common fibular nerve

Q9. How is pectineus positioned relative to adductor brevis?

• Posterior to the hamstrings
• Superior and anterior to adductor brevis
• Distal to the knee
• Lateral to vastus lateralis

Q10. Why can pectineus contribute during early swing in gait?

• It extends the knee through the patella
• It can assist hip flexion to advance the thigh
• It plantarflexes the ankle for push-off
• It flexes the toes