Definition

1. Noun:
   • A semilunar valve of the heart: The aortic valve is a specific valve in the heart, located between the left ventricle (the heart's main pumping chamber) and the aorta (the body's main artery). Its primary function is to prevent the backflow of blood from the aorta into the heart.

Usage

• The term "aortic valve" is used in medical, anatomical, and biological contexts to refer to this specific cardiac structure.
• It is typically used with definite articles ("the aortic valve") or possessive determiners ("his aortic valve") when referring to a specific instance.
• Example:

Examples

• Noun:
  • Aortic valve stenosis is a condition where the valve narrows, restricting blood flow.
  • During a heartbeat, the aortic valve opens to allow oxygen-rich blood to be pumped from the left ventricle into the aorta.
  • An echocardiogram can show how well the aortic valve is functioning.

Advanced Usage

• "Aortic valve replacement": A surgical procedure to replace a diseased aortic valve with a new one.
  • The 70-year-old patient successfully underwent aortic valve replacement.
• "Aortic valve disease": A general term for conditions affecting the aortic valve.
  • Congenital defects can lead to aortic valve disease.

Variants and Related Words

• Aortic (adj): Pertaining to the aorta.
  • The aortic arch is a section of the main artery.
• Valve (n): A structure that temporarily closes a passage or orifice, or permits flow in one direction only.
  • The heart has four main valves.
• Semilunar valve (n): The anatomical category of valves, including the aortic and pulmonary valves, shaped like half-moons.

Synonyms

• Left ventricular outflow valve: A descriptive synonym emphasizing its location and function. (Note: "Aortic valve" is the standard and primary term.)

Related Phrases

• "Aortic valve area": A measurement used to assess the severity of valve stenosis.
  • The cardiologist calculated the aortic valve area from the ultrasound images.
• "Aortic valve regurgitation": A condition where the valve does not close tightly, allowing blood to leak backward.
  • His dizziness was caused by severe aortic valve regurgitation.

Noun

1. a semilunar valve between the left ventricle and the aorta; prevents blood from flowing from the aorta back into the heart