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InterviewSolution
| 1. |
Why is the human placenta referred to as haemochorial type? Name the hormone it secretes to facilitate parturition. |
| Answer» TION:✔ The human placenta is referred to as haemochorial type because it comes in direct contact with the chorionic TROPHOBLAST LAYER of the embryo.✔ The gases, nutrients and waste materials produced by the embryo are transported via the umbilical cord into the blood stream of the mother. Similarly, nutrients are transferred from the mother to the embryo.✔ The placenta secretes human placental lactogen during pregnancy, which induces mild uterine contractions called total ejection reflex to facilitate PARTURITION. | |