placental barrier — n a semipermeable membrane made up of placental tissues and limiting the kind and amount of material exchanged between mother and fetus <thiazides cross the placental barrier and appear in cord blood (Resident & Staff Physician)> * * * the… … 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
placental barrier — noun : a semipermeable membrane made up of placental tissues and limiting the character and amount of material exchanged between mother and fetus … Useful english dictionary
Placenta — A temporary organ joining the mother and fetus, the placenta transfers oxygen and nutrients from the mother to the fetus, and permits the release of carbon dioxide and waste products from the fetus. It is roughly disk shaped, and at full term… … Medical dictionary
barrier — 1. An obstacle or impediment. 2. In psychiatry, a conflictual agent that blocks behavior that could help resolve a personal struggle. [M.E., fr. O.Fr. barriere, fr. L.L. barraria] blood air b. the material intervening between alveolar air and the … Medical dictionary
Western Blue-tongued Lizard — Taxobox name = Western Blue tongued Lizard image width = 250px regnum = Animalia phylum = Chordata classis = Reptilia ordo = Squamata subordo = Sauria familia = Scincidae genus = Tiliqua species = T. occipitalis binomial = Tiliqua occipitalis… … Wikipedia
Grünenthal GmbH — (Chemie Grünenthal of Stolberg (Rhineland)) is a German pharmaceutical company in Stolberg (Rhineland) near Aachen, which holds the patent to Ultram (Tramadol), and its much stronger derivative Nucynta (Tapentadol), both used as analgesics… … Wikipedia
vanishing twin syndrome — the disappearance of one fetus following the sonographic diagnosis of a twin pregnancy, with only one twin eventually being delivered; the vanished twin may be resorbed or incorporated into the placental membrane … Medical dictionary
placenta — placental, placentary /plas euhn ter ee, pleuh sen teuh ree/, adj. /pleuh sen teuh/, n., pl. placentas, placentae / tee/. 1. Anat., Zool. the organ in most mammals, formed in the lining of the uterus by the union of the uterine mucous membrane… … Universalium
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Placental membrane separating the blood in the fetal capillaries from the maternal blood in the intervillous space. (A), Chorionic villus containing the fetal vessels and surrounded by maternal blood in the intervillous space; (B), cross-section through a villus, showing the layers of the placental membrane separating the fetal blood from the maternal blood surrounding the villus.
