Intermediate Rectus Femoris Quiz

Q1. The reflected head of rectus femoris arises from which region?

• Ischial tuberosity
• Pecten pubis
• Supra-acetabular region of the ilium
• Iliac crest posteriorly

Q2. Which spinal nerve roots principally contribute to rectus femoris through the femoral nerve?

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

Q3. Which vessel is an important arterial source for rectus femoris?

• Fibular artery
• Superior gluteal artery only
• Lateral circumflex femoral artery
• Posterior tibial artery

Q4. Why is rectus femoris anatomically different from the vastus muscles in joint action?

• It crosses both the hip and knee
• It does not cross the knee
• It crosses the ankle and knee
• It crosses only the hip

Q5. What effect does hip extension have on rectus femoris length?

• It lengthens rectus femoris
• It shortens rectus femoris
• It has no effect on muscle length
• It detaches the reflected head

Q6. How are rectus femoris and vastus intermedius arranged?

• They lie in separate thigh compartments
• Vastus intermedius lies superficial to fascia lata
• Rectus femoris lies superficial to vastus intermedius
• Rectus femoris lies deep to vastus intermedius

Q7. How can rectus femoris contribute during the swing phase of walking?

• By flexing the toes
• By acting as the primary hip abductor
• By assisting hip flexion
• By producing ankle plantarflexion

Q8. What is one mechanical function of the patella in the quadriceps mechanism?

• It provides the femoral nerve supply
• It increases the knee extensor moment arm
• It converts quadriceps force into knee flexion
• It blocks transmission of force to the tibia

Q9. Why can rectus femoris contribute strongly during kicking?

• It produces ankle inversion and toe flexion
• It assists hip extension and knee flexion
• It can assist hip flexion and knee extension
• It acts only at the knee and never at the hip

Q10. Which feature of rectus femoris differs from all three vasti?

• It has an origin on the pelvis
• It inserts through the quadriceps tendon
• It is supplied by the femoral nerve
• It extends the knee