Intermediate Pectineus Quiz

Q1. Which specific pubic landmark gives origin to pectineus?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Q9. How is pectineus positioned relative to adductor brevis?

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

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

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