156 GLOSSARY. 



Ve'lum interpo'situm (L. the interposed veil). A term applied 

 to the choroid membrane of the brain which is situated 

 between the fornix and optic thalami. 



Ve'lum medulla're ante'rius (L. anterior medullary veil). 

 Another name for the valve of Vieussens of the brain. 



Ve'lum pen'dulum pa'lati (L. the pendulous veil of the palate). 

 The posterior part of the soft palate. 



Ve'lum, poste'rior medullary (L. velum, a curtain). A lami- 

 nated structure in the cerebellum comparable to the valve 

 of Vieussens. 



Ve'na a'zygos ma'jor (L. the great unyoked vein). A vein on 

 the right side of the body, commencing in the lumbar 

 region, and emptying itself into the superior vena cava. 



Ve'na ca'va (L. hollow vein). The name of each of the two 

 large veins which bring the blood back to the right side of 

 the heart ; the vena cava superior bringing the blood from 

 the head and upper extremities, the vena cava inferior 

 returning blood from the trunk and lower extremities. 



Ve'na cor'dis mag'na (L. the large vein of the heart). The large 

 vein which returns the blood from the substance of the 

 heart to the right auricle. 



Ve'na hemia'zygos (L. half-unyoked vein). The smaller azygos 

 vein ; a vein which, commencing on the left side of the 

 trunk, answers to the large azygos vein on the right side, 

 into the upper part of which it opens. 



Ve'na. par umbilica'lis (L. equal umbilical vein). A small vein 

 which sometimes opens a connexion between the external 

 iliac and the portal vein. 



Ve'na por'tae (L. the vein of the gate, or portal vein). The 

 large vein which carries venous blood, (derived from the 

 stomach, intestines, spleen, and pancreas,) to the liver; so 

 called because it enters the porta or gate of the liver. 



Ve'na salvatel'la. A name formerly given to a small vein by 

 which the posterior ulnar vein commences. 



Ve'nae abdomina'les anterio'res (L. anterior abdominal veins). 

 Large branches of the iliac veins which in the Reptilia 

 run along the anterior wall of the abdominal cavity. 



Ve'nae advehen'tes (L. vena, a vein ; adveho, to carry to a 

 place). Small veins which in the foetus carry blood into 

 the liver from the ductus' venosus. 



Ve'nae ba'sis vertebra'rum (L. veins of the bodies of the verte- 

 brae). The veins contained in the canals within the 

 bodies of the vertebrae. 



