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Effects of age, parity and length of pregnancy on the morphology and histology of human placenta.

A great majority of death-in-utero in this country may be due to placental insufficiency. This problem may have some correlation between parity, maternal age and weight of placenta. The present work has been attempted towards determination of the morphological and histological aspect of human full-term placentae and their relation with different parity and age group of mothers. The weight, size and number of cotyledons of placentae were found to be directly proportional to the maternal age and parity. No definite change in histology was observed except for the increase in fibrinoid degenerations in the stem villi and calcium deposition on the septal region of the placentae. These changes may have some important bearing on the placental insufficiency in higher age group and parity of mother.