Anatomy Quiz

Which nerve is formed by the union of the ventral rami of the first three lumbar nerves and a part of the fourth lumbar nerve?

• Femoral nerve

• Obturator nerve

• Sciatic nerve

• Genitofemoral nerve

What is the effect of obturator nerve injury?

• Loss of sensation on the lateral side of the thigh

• Loss of sensation on the dorsum of the foot

• Paralysis of quadriceps femoris

• Weakness of adduction of the thigh

Which nerve is the largest branch of the lumbar plexus and arises from the dorsal divisions of the ventral rami of L2, L3, L4?

• Femoral nerve

• Genitofemoral nerve

• Obturator nerve

• Sciatic nerve

What is the main effect of femoral nerve injury?

• Weakness of extension of the knee

• Loss of sensation on the lateral side of the thigh

• Weakness of adduction of the thigh

• Loss of sensation on the dorsum of the foot

Which nerve is the thickest nerve in the body?

• Genitofemoral nerve

• Femoral nerve

• Sciatic nerve

• Obturator nerve

What is the effect of sciatic nerve injury?

• Weakness of flexion of the knee

• Loss of sensation on the lateral side of the thigh

• Paralysis of hamstring muscles

• Loss of sensation on the dorsum of the foot

Where does the tibial nerve enter the popliteal fossa?

• Lateral side

• Lower angle

• Upper angle

• Medial side

What is the main effect of common peroneal nerve injury?

• Trendelenburg's sign

• Waddling gait

• Weakness of hip extension

• Foot drop

Which nerve supplies the skin of the back of the leg and lateral side of the foot and the little toe?

• Common peroneal nerve

• Sciatic nerve

• Tibial nerve

• Sural nerve

What is the effect of anterior tibial nerve injury?

• Weakness of knee extension

• Weakness of hip extension

• Foot drop

• High steppage gait