Placental membrane
placental membrane n.
The semipermeable layer of tissue separating maternal blood from fetal blood in the placenta.
Read Also:
- Placental presentation
placental presentation n. See placenta previa.
- Placental souffle
placental souffle n. See uterine souffle.
- Placenta marginata
placenta marginata placenta mar·gi·na·ta (mär’jə-nā’tə) n. A placenta having raised edges that are less elevated than those of placenta circumvallata.
- Placenta membranacea
placenta membranacea placenta mem·bra·na·ce·a (měm’brə-nā’sē-ə) n. An abnormally thin placenta covering an unusually large area of the uterus.
- Placenta previa
placenta previa placenta pre·vi·a (prē’vē-ə) n. A condition in which the placenta is implanted in the lower segment of the uterus so that it is adjacent to or obstructs the internal opening of the cervix. It may cause maternal hemorrhage prior to or during labor. Also called placental presentation.