He drew a circle using geometric construction.

Electroporation is a biotechnology technique that creates temporary holes in the cell membrane to incorporate substances into the cell.

Variational method is a branch of mathematics used to find the minimum and maximum values of functions.

The semispinalis capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

He injured his semitendinosus muscle.

He injured his semimembranosus muscle.

The semispinalis thoracis muscle is a deep muscle in the back that supports movement from the neck to the waist.

The semispinalis cervicis muscle is a part of the neck muscles, helping to pull the head back.

This model of the cubohemioctahedron is very beautiful, isn't it?

He is studying the shape of a tetrahemihexahedron.