Rectus inferior is a muscle located within the eye that is responsible for downward movement of the eyeball. This muscle can also be referred to as inferior rectus muscle or inferior recti. Other potential synonyms for rectus inferior include the Latin terms musculus rectus inferior oculi or simply musculus inferior. Some medical professionals may also use phrases like the lower rectus muscle, inferior eye muscle, or the eye muscle located below the centerline. Understanding these synonyms can help individuals better communicate with healthcare providers about their eye health and any related concerns.