Arcus

Arcus

Arcus (/ˈɑːrkəs/), from the Latin word for "bow" or "arch", is a term used in various fields of medicine to describe a curved or bow-like structure.

Medical Definitions

In the field of Ophthalmology, Arcus refers to Arcus Senilis, a gray or white arc visible above and below the outer part of the cornea — the clear, dome-like covering over the front of the eye. It is common in older adults and is often considered a normal part of aging.

In Cardiology, Arcus may refer to Arcus Aorta, the top part of the main artery carrying blood away from the heart. It is responsible for the distribution of oxygenated blood to all parts of the body.

In Anatomy, Arcus can refer to various arch-like structures, such as the Arcus Palatoglossus and Arcus Palatopharyngeus, which are muscles of the mouth and throat.

Etymology

The term Arcus is derived from the Latin word "arcus", which means "bow" or "arch". This term is used in medicine due to the arch-like shape of the structures it describes.

Related Terms

• Arcus Senilis
• Arcus Aorta
• Arcus Palatoglossus
• Arcus Palatopharyngeus

See Also

• Cornea
• Aorta
• Ophthalmology
• Cardiology
• Anatomy

External links

• Medical encyclopedia article on Arcus
• Wikipedia's article - Arcus

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