Chapter 13 - Birth And Development

Question 0

What is Parturition?

Answer 0

Aka Birth

Question 1

What is Gestation?

Answer 1

The time that the embryo or foetus is carried in the uterus.

Question 2

Explain The First Stage of Labour.

Answer 2

1. Labour Pains final weeks of prego
2. Dilation of Cervix (4hrs 2nd child)
3. Waves of contraction uterus->cervix
   =each contraction opens cervix a little
4. Birth canal is formed

Question 3

Explain The Second Stage of Labour.

Answer 3

It is the Stage of Repulsion (Delivery)

1. Membrane surrounding foetus burst, fluids gush out
2. Foetus’ head stretches the vagina
3. Dissension occurs (farts) + vaginal contraction
4. The foetus’ head turns to face mum’s back
5. Hard work
6. Once the head has emerged, it turns sideways again to force the rest of its body out.

Question 4

Explain The Third Stage of Labour.

Answer 4

Umbilicus (navel)

Vernix/ protective was later

Question 5

What is Ductus Arteriosus?

Answer 5

Lung bypass, which allows blood in the pulmonary artery to flow directly into the aorta.

Question 6

What’s a Foramen Ovale?

Answer 6

An oval opening located between both chambers. It allows most of the blood entering the right atrium to go through it.

Question 7

What happens to the Foreman Ovale?

Answer 7

The increases blood pressure forces the flap if the Foramen Ovale against the wall it the atrium, closing off the opening.