vitelline body
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vitelline body — see yolk nucleus … Dictionary of invertebrate zoology
Balbiani's vitelline body — yolk nucleus or the dark circular body that appears in the cytoplasm very near the nucleus during the perinuclear stage of oogenesis … Dictionary of ichthyology
Vitelline duct — Fetus of about eight weeks, enclosed in the amnion. (Vitelline duct labeled at lower right.) … Wikipedia
yolk nucleus — Intensely osmiophilic body located near the nucleus; vitelline body; Balbiani s body … Dictionary of invertebrate zoology
yolk nucleus — a special area of the cytoplasm of an oocyte in which the synthetic activities leading to the accumulation of food supplies in the oocyte are apparently initiated; called also vitelline body and Balbiani n. or body … Medical dictionary
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
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
egg — egg1 eggless, adj. eggy, adj. /eg/, n. 1. the roundish reproductive body produced by the female of certain animals, as birds and most reptiles, consisting of an ovum and its envelope of albumen, jelly, membranes, egg case, or shell, according to… … Universalium
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
membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m … Medical dictionary
