Question

Why is the human placenta referred to as haemochorial type? Name the hormone it secretes to facilitate parturition.​

Answer 1

Explanation:

✔ 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.

Answer 2

Answer:

1. Human placenta is called as haemochorial type because it is in direct contact with the fetus or chorion. The fetus receives blood supply, nutrients and oxygen from the placenta as well as the waste is also removed through the placenta. ... The blood and other kind of supply is facilitated by the chorionic

Explanation:

Hormones involved in the induction of parturition are oxytocin and relaxin. The signals for parturition originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex. This triggers release of oxytocin from the maternal pituitary