Morphometry of normal placental tissue at term
Abstract
91 placentas of normal pregnancies at term after spontaneous deliveries were investigated by morphometry. The circumference, diameter and area of cross sections of placental villi and fetal capillaries, the percentage of epithelial plates of the circumference, and the degree of vascularisation was determined. Measurement was performed at the center and at the periphery of the placenta.
The diameter of the terminal villi was 50 µm and the cross section area 1977 µm2. They were determined by eyepiece micrometer and optomanual planimetry, respectively. The degree of vascularisation was 33.0% by point count and 35.6% using optomanual planimetry. Percentage of epithelial plates of circumference was 8.7% when point count was used and 18.5% in case of planimetry.