PLACENTA
placenta
(noun) the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus
placenta
(noun) that part of the ovary of a flowering plant where the ovules form
Source: WordNet® 3.1
Etymology
Noun
placenta (plural placentae or placentas)
(anatomy) 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.
It is an endocrine gland which secret human chorionic gonadotropin hormone.The HCG if detected in woman's urine then the pregnancy is confirmed.
(botany) In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.
Synonyms
• afterbirth
Anagrams
• Tlapanec, pantacle
Source: Wiktionary
Pla*cen"ta, n.; pl. L. Placentæ, E. Placentas. Etym: [L., a cake, Gr.
1. (Anat.)
Definition: The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth.
Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi on its surface penetrate the blood vessels of the parental uterus, and thus establish a nutritive and excretory connection between the blood of the fetus and that of the parent, though the blood itself does not flow from one to the other.
2. (Bot.)
Definition: The part of a pistil or fruit to which the ovules or seeds are attached.
Source: Webster’s Unabridged Dictionary 1913 Edition
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Word of the Day
28 November 2024
SYNCRETISM
(noun) the fusion of originally different inflected forms (resulting in a reduction in the use of inflections)
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