He always acts without questioning right and wrong.

He always acts considering right and wrong.

He is training his rectus abdominis muscle every day.

He is doing special exercises to strengthen his medial rectus muscle.

This imperial edict is an important command from the emperor.

It is rumored that he is a member of a secret society.

My father was diagnosed with ankylosing spondylitis.

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

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 puborectalis muscle plays a crucial role in controlling defecation.