The rectus capitis lateralis muscle is part of the neck muscles, and it helps to move the head sideways.

He is doing a special exercise to train his occipitofrontalis muscle.

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

He was swimming freely as if he was a fish playing in the pot.

He is a person who follows his own path, and the phrase 'a big fish does not swim into a small stream' fits him perfectly.

It's rare to find a Malayan night heron in the park.

The rectus capitis posterior major muscle is a part of the neck muscles, and it helps in the action of pulling the head backwards.

The rectus capitis posterior minor muscle is a part of the neck muscles, and it helps tilt the head backwards.

The North American Aerospace Defense Command is responsible for the aerospace defense of North America.