vitelline vessel

См. также в других словарях:

• Vessel — A tube in the body that carries fluids: blood vessels or lymph vessels. * * * A structure conveying or containing a fluid, especially a liquid. SEE ALSO: vas. [O. Fr. fr. L. vascellum, dim. of vas] absorbent vessels SYN: lymph vessels. afferent v …   Medical dictionary

• Circulatory system — This article is about the organ system. For the band, see Circulatory System. For transport in plants, see Vascular tissue. Circulatory system …   Wikipedia

• animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

• Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… …   Medical dictionary

• Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… …   Medical dictionary

• fistula — An abnormal passage from one epithelial surface to another epithelial surface. [L. a pipe, a tube] abdominal f. a fistulous passage connecting one of the abdominal viscera …   Medical dictionary

• Placenta — For the ancient Roman bread, see placenta (food). For the placenta of fruit, see placentation. Placenta Placenta Precursor …   Wikipedia

• Umbilical artery — Artery: Umbilical artery Fetal circulation; the umbilical vein is the large, red vessel at the far left. The umbilical arteries are purple and wrap around the umbilical vein …   Wikipedia

• Ductus venosus — Vein: Ductus venosus Fetal circulation. The ductus venosus (red) connects the umbilical vein to the inferior vena cava …   Wikipedia

• Portosystemic shunt — A portosystemic shunt (PSS), also known as a liver shunt, is a bypass of the liver by the body s circulatory system. It can be either a congenital (present at birth) or acquired condition. Congenital PSS is a hereditary condition in dogs and cats …   Wikipedia

• human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium