When and where do chorionic villi appear in humans? State their function.
Chorionic villi appear on the trophoblast after implantation. Chorionic villi interdigitate with the uterine tissues and jointly forms the placenta which is a structural and functional unit between developing embryo and maternal body.
Write the function of each one of the following:
(a) (Oviducal) Fimbriae
(b) Coleoptile
(c) OxytocinDraw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions.
(a) Acrosome
(b) Nucleus
(c) Middle piece
Describe the process of Parturition in humans.
Write the location and function of the sertoli cells in humans.
