She has mastered the technique of facesitting.

Sakuramenzuhira represents the beautiful nature of Japan.

He made a model of a dodecahedron.

This regular tetrahedron is composed of equilateral triangles on all sides.

This is a model of a great icosahemidodecahedron.

The handle of this umbrella is very easy to grip.

The erector spinae is an important muscle for keeping the back straight.

He is doing a special exercise to strengthen his omohyoid muscle.

The mylohyoid muscle plays an important role in opening the mouth.

He damaged his peroneus tertius muscle due to a foot injury.