maternal cotyledon

ma·ter·nal cot·y·le·don

a unit of the placenta made up of trophoblastic cells, fibrous tissue, and abundant blood vessels; it is visible grossly on the maternal surface as an irregularly shaped lobe circumscribed by a deep cleft and made up of a stem villus with numerous free branch and anchoring villi; placental vessels in the chorionic plate supply the stem villus and its branches, allowing gas and metabolite exchange across the trophoblastic layer with maternal blood in the intervillous space.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Maternal cotyledons are 15 to 30 and each cotyledon receives 2 to 3 stem villi.
[18] According to Bhatnagar et al in 1983, the number of maternal cotyledons was 15-20.
Groups Discoidal Circular Oval Bilobed I 77 23 0 0 II 63.5 32 3.23 1.27 Table III- Number of maternal cotyledons in various groups- Groups Average No.
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