Word Finder - placentas

definition

A vascular organ in mammals, except monotremes and marsupials, present only in the female during gestation. It supplies food and oxygen from the mother to the foetus, and passes back waste. It is implanted in the wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.

definition

It is an endocrine gland which secret human chorionic gonadotropin hormone.The HCG if detected in woman's urine then the pregnancy is confirmed.

definition

In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.

The ovary is incompletely divided into many chambers by the ingrowth of the placentas which bear numerous ovules and form in the fruit a many-seeded short capsule opening by small valves below the upper edge.

The ovary of passionflowers is one-celled with three parietal placentas, and bears at the top three styles, each capped by a large button-like stigma.

The flowers spring from, or are enclosed in, a spathe, and are unisexual and regular, with generally a calyx and corolla, each of three members; the stamens are in whorls of three, the inner whorls are often barren; the two to fifteen carpels form an inferior ovary containing generally numerous ovules on often large, produced, parietal placentas.

In many cases, however, the placentas are formations from the axis (axile), and are not connected with the carpellary leaves.

This is seen in cases where the margins of the carpel do not unite, but remain separate, and consequently two placentas are formed in place of one.

The placentas are parietal, and the ovules appear sessile on the walls of the ovary.

In these instances the placentas may be formed at the margin of the united contiguous leaves, so as to appear single, or the margins may not be united, each developing a placenta.

In this case the ovary is unilocular, and the placentas are parietal.

From the centre, processes go to circumference, ending in curved placentas bearing the ovules.

At other times they are vertical, as in Datura, where the ovary, in place of being two-celled, becomes four-celled; in Cruciferae, where the prolongation of the placentas forms a vertical partition; in Astragalus and Thespesia, where the dorsal suture is folded inwards; and in Oxytropis, where the ventral suture is folded inwards.

The early scans had shown two separate placentas - one each side of the uterus.

It was the scene of two naval battles of the t Transverse section of the fruit of the melon (Cucumis melo), showing the placentas (p1), with the seeds attached to them.

Fraternal twins are easy to identify on an ultrasound as they always have their own placentas.

Retained placentas may also be a problem.

Watch for the placentas, and make sure each one comes out after the birth of the last kitten.

If the two fetuses have separate amniotic sacs, they can either share a placenta or have two separate placentas.

The day the egg splits determines whether your twins will have one large placenta they share with two umbilical cords or two separate placentas.