PARTURITION AND LACTATION

PARTURITION AND LACTATION

 

Parturition:

·         The period of pregnancy is called gestation period. (9 months).

·         Ejection or expulsion or delivery of foetus is called parturition.

·         Parturition is due to vigorous contraction of uterine Myometrium.

·         The signal of parturition is originated from the fully developed foetus and the placenta which induces mild contraction of uterus called foetal ejection reflex.

·         Fetal ejection reflex triggers the release of Oxytocin from pituitary.

·         Oxytocin induces stronger contraction of uterine endometrium.

·         Stimulatory reflex continues stronger contraction leads to expulsion.

·         After delivery the placenta is also expelled out of the uterus.

Lactation:                                        

·         The mammary gland of the female more differentiated during pregnancy,

·         Mammary gland starts producing milk towards the end of the pregnancy.

·         Process of milk production in mammary gland is called lactation.

·         Milk produced during initial days of lactation is called colostrum.

·         Colostrum contains several antibodies which provide immunity to the new born baby.

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