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Lecture XI: Reproduction

Lecture XI: Reproduction.

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Lecture XI: Reproduction

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  1. Lecture XI: Reproduction Fig. 5.   Mammalian neonates. (a) Monotreme (echidna) hatching from its egg. (b) Newborn marsupials (Antechinusagilis) attached to mother’s teats in pouch. Inset, individual neonate. (c) Newborn marsupial (tammary wallaby) attached to mother’s teat in pouch. (d) A 14.5-day post-coitus mouse fetus dissected from the uterus.

  2. Epitheliochorial • Minimal endometrial erosion • Pocket around chorionic villi • maternal blood • Endotheliochorial • Epithelium and connective tissue erode • Chorionic villi in direct contact with maternal capillaries • Hemochorial • Maternal tissue erodes • Chorionic villi bathed in maternal blood • Hemoendothelial • Chorionic tissue erodes • Fetal capillaries bathed in maternal blood

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