| caval | Relating to a vena cava. (05 Mar 2000) |
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| caval fold | A fold near the base on the right side of the dorsal mesentery, in which a primordial segment of the inferior vena cava develops between the right subcardinal vein and vessels within the liver. (05 Mar 2000) |
| caval valve | An endocardial fold extending from the anterior inferior margin of the inferior vena cava to the anterior part of the limbus fossa ovalis. Synonym: valvula venae cavae inferioris, caval valve, eustachian valve, sylvian valve. (05 Mar 2000) |
| cavalry bone | Heterotopic bone ossification of the tendon of the adductor longus muscle from strain in horseback riding. Synonym: cavalry bone, exercise bone. (05 Mar 2000) |
| vena caval foramen | An opening in the right lobe of the central tendon of the diaphragm which transmits the inferior vena cava and branches of the right phrenic nerve. Synonym: foramen venae cavae, foramen of vena cava, foramen quadratum. (05 Mar 2000) |
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