He underwent surgery on the depressor septi nasi.

He started a business without a plan, forgetting the lesson of 'peach and chestnut seeds take three years to bear fruit, persimmons eight years.'

He was diagnosed with amyotrophic lateral sclerosis.

He is doing a special exercise to strengthen his extensor carpi radialis brevis.

The extensor carpi radialis longus is a part of the arm muscles and helps in the movement of the wrist.

This is a model of a mutetrahedron.

This mutetrahedron has a very unusual shape.