Question

The third stage of parturition is known as “after-birth”. In this stage.
A. Excessive bleeding occurs.
B. Foetus is born and cervix and vagina contractions to normal conditions happen.
C. Foetus is born and contraction of uterine wall prevents excessive bleeding
D. Placenta is expelled out

Answer 1

Hint: The process of parturition which is the process of giving birth to the offspring, generally occurs in 3 stages. The process of parturition occurs with a series of events that involve the endocrine and muscular systems.

Step by step answer:In the process of Parturition, the third and the final stage known as the after-birth involves the expulsion of the placenta from the uterus which used to function as a connecting link between the mother and the foetus. After the delivery of the foetus, uterine contractions continue expelling out the placenta.
The other stages of childbirth involved are-
Stage 1- where the cervical dilation occurs
Stage 2- where the delivery of the fetus takes place
Hence, the correct answer is Option D, i.e., Placenta is expelled out

Note: The placenta is an organ that is developed in the uterus once implantation occurs, the main function of the organ is to provide oxygen and other nutrients to the developing foetus, also the removal of the waste products from the blood of the foetus, it is attached to the wall of the foetus and the umbilical cord which attaches the foetus to the mother arises from it. It also facilitates the transfer of certain antibodies from the mother to the foetus, providing protection from a number of infections and diseases, at the same time also functions as a barrier between the mother and foetus preventing the entry of harmful substances from the mother’s blood from entering the fetal blood.