Dictionary > Labour

Labour

Labour
(Science: obstetrics) The act of giving Birth to a baby. There are four stages:
The first stage lasts from the onset of labour until there is full dilation (10 cm.) of the cervical os (opening). The first stage of labour is also called the stage of dilatation.
The second stage lasts from the full dilatation of the cervix until the baby is completely out of the birth canal and has been born. The second stage of labour is also called the stage of expulsion.
The third stage lasts from birth of the foetus through expulsion or extraction of the placenta and membranes (afterbirth). The third stage of labour is also called the placental stage.
The fourth stage is the hour or two after delivery when the tone of the uterus is established and the uterus contracts down again.


You will also like...

Buttress roots
Roots

This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

Chromosomes X and Y and Sex Determination
Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

Birth Control and Contraception
Birth Control and Contraception

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Carbohydrates, fats and proteins - dietary sources
A Balanced Diet – Carbohydrates and Fat

Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

Pollution in Freshwater Ecosystems
Pollution in Freshwater Ecosystems

There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

Still Water Community Plants
Still Water Community Plants

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..