Definition

Noun: 1. The curved portion of the aorta: The part of the aorta, the main and largest artery in the body, that bends or arches as it leaves the heart and turns downward to continue as the descending aorta.

Usage

The term "aortic arch" is used in medical, anatomical, and biological contexts to specify the specific curved segment of the aorta. It is a precise anatomical landmark. - It functions as a critical conduit for oxygenated blood leaving the heart's left ventricle. - Major arteries branching from it supply blood to the head, neck, and arms.

Examples

• In Anatomy:
  • The aortic arch gives rise to three major branches: the brachiocephalic trunk, the left common carotid artery, and the left subclavian artery.
  • An aneurysm of the aortic arch is a serious medical condition requiring careful monitoring.
• In Development:
  • During embryonic development, several aortic arches form, but most regress, leaving the definitive arch seen in adults.

Advanced Usage

• Aortic arch syndrome: A group of disorders caused by blockage or narrowing of the arteries branching from the aortic arch.
  • Takayasu's arteritis is a form of aortic arch syndrome.
• Interrupted aortic arch: A rare congenital heart defect where a segment of the aortic arch is missing.
  • The newborn was diagnosed with an interrupted aortic arch and required immediate surgery.

Variants and Related Words

• Aorta (noun): The main artery of the body, originating from the left ventricle of the heart. The aortic arch is a specific part of the aorta.
• Descending aorta (noun): The part of the aorta that continues downward from the aortic arch, running through the chest and abdomen.
• Ascending aorta (noun): The first part of the aorta, which rises upward from the heart before forming the aortic arch.

Synonyms

• Arch of the aorta: A direct synonym, though less commonly used in everyday medical parlance.

Related Phrases

• Branch of the aortic arch: Refers to any of the major arteries that originate from the aortic arch.
  • The left common carotid artery is a branch of the aortic arch.

Noun

1. the part of the aorta that arches and turns downward