Definition

1. Noun:
   • A major vein: The "vena cava" is either of the two large veins in the human body that carry deoxygenated blood from the systemic circulation back to the right atrium of the heart.

Usage

• The term "vena cava" is a singular noun. Its standard plural form is "venae cavae."
• It is a specific anatomical term used in medical and biological contexts.
• It is typically preceded by the words "superior" or "inferior" to specify which of the two veins is being discussed.

Examples

• Noun:
  • The superior vena cava returns blood from the head and upper body.
  • A blockage in the inferior vena cava can cause serious health issues.
  • The surgeon carefully dissected around the vena cava.

Advanced Usage

• "Vena cava filter": A medical device inserted into the inferior vena cava to prevent blood clots from traveling to the lungs.
  • The patient received a vena cava filter to reduce the risk of pulmonary embolism.

Variants and Related Words

• Superior vena cava (SVC) (n): The large vein that carries blood from the head, neck, upper limbs, and chest to the heart.
• Inferior vena cava (IVC) (n): The large vein that carries blood from the lower body and legs to the heart.
• Venous (adj): Relating to veins.
  • The venous blood returns to the heart via the venae cavae.

Synonyms

• Great vein: A less common, non-technical synonym.
• Caval vein: An alternative anatomical term.

Related Phrases

• Caval opening: An opening in the diaphragm through which the inferior vena cava passes.
  • The caval opening allows the inferior vena cava to reach the heart.

Noun

1. either of two large veins that return oxygen-depleted blood to the right atrium of the heart