Question

which nerve root and nerve combination is correctly matched for plantar flexion and eversion from the following choices? l5, sciatic l3, femoral l4, deep peroneal s1, superficial peroneal

Explanation:

• L5/Sciatic: Sciatic nerve splits into tibial (plantar flexion) and common peroneal (eversion), but L5 is not the primary root for this combined action.
• L3/Femoral: Femoral nerve controls knee extension, not plantar flexion/eversion.
• L4/Deep Peroneal: Deep peroneal nerve handles dorsiflexion, not plantar flexion.
• S1/Superficial Peroneal: S1 is the primary nerve root for plantar flexion (via tibial branch of sciatic), and the superficial peroneal nerve innervates muscles for eversion; this pair correctly matches the actions.

Answer:

S1, Superficial Peroneal