He is doing a special exercise to train his longissimus thoracis muscle.

The epicranius muscle is one of the important muscles for making facial expressions.

He measured muscle activity using an electromyograph.

I examined muscle activity using an electromyogram.

The clitoral glans is a part of the female genitalia and is very sensitive to sexual stimulation.

He is acting in a way that is like 'hide the head but forget the tail'.

I found a masked lapwing in the park.

The tobi-kashira-mukade is a very rare creature.

He is a successful businessman, but just like the proverb 'the more the rice stalks grow, the more they bow', the more his success grows, the more humble he becomes.

He did a somersault in the park.