is the vena cava a vein or artery
Inferior vena cava The inferior vena cava (or IVC) (Latin: vena, "vein", cavus, "hollow") is a large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart. Its walls are rigid and has valves so the blood does not flow down via gravity. It is formed by the joining of the right and the left common iliac veins, usually at the level of the fifth lumbar vertebra.
Shekhinah This term does not occur in the Bible, and is from rabbinic literature.[2]:148[3][4]
Skin appendage Skin appendages are derived from the skin, and are usually adjacent to it.[1]
Corona Spectroscopy measurements indicate strong ionization and plasma temperature in excess of 1,000,000 kelvins,[1] much hotter than the surface of the Sun.