1. Flexion of the big toe (hallux): This means it pulls the big toe downwards, towards the sole of the foot.

2. Plantarflexion of the foot: This means it pulls the foot downwards, pointing the toes.

It also contributes to inversion of the foot, which means turning the sole of the foot inwards.

Let me know if you have any other questions about the flexor hallucis longus or other muscles in the foot!