Rectus capitis anterior is a muscle located at the base of the skull, just below the occipital bone, and is responsible for maintaining proper posture and stability of the head and neck. This muscle is also commonly referred to as the anterior rectus or the rectus capitis anterior major. Other synonyms for rectus capitis anterior include the following: straight head muscle, rectus capitis anterior minor, straight anterior head muscle, rectus capitis, and anterior suboccipital muscle. These different terms are used to describe the same muscle, and they can often be used interchangeably depending on the context in which they are being used. Understanding the different synonyms for rectus capitis anterior can help individuals better describe and communicate about this important muscle in the human body.