changes to baby and mother at birth

Question 1

describe the flow of blood through the foetus before birth

Answer 1

• Mothers nutrient-rich and oxygenated blood travels through the baby
• travels through the ductus venus which bypasses the deliver
• a small amount of blood travels to the liver to keep the cells growing
• the majority of blood will enter and exit the right atrium and enter the ductus arteriosus which bypasses the lungs
• a small amount of blood will travel to the lungs and left atrium of the heart via the foramen ovale to ensure the cells of the heart and lungs continue to grow
• this blood will rejoin the majority of blood to be transported around the body by the aorta

Question 2

describe the flow of blood through the foetus after birth

Answer 2

• the ductus arteriosus and venous will pinch on either side causing blood to not bypass to lungs and liver
• blood will directly flow to the lungs and liver
• due to a lack of nutrients and oxygen they breakdown
• the foramen ovale will close up o from the left and right side of the heart
• umbilical artery and vein will pinch and breakdown due to lack of nutrients
• cells will disappear

Question 3

what does the ductus arteriosus do

Answer 3

Bypasses the lungs

Question 4

what does the ductus venosus do

Answer 4

bypasses the liver

Question 5

what does the foramen ovale do

Answer 5

connects right and left the atrium

Question 6

what does the umbilical artery do

Answer 6

takes carbon dioxide and wastes away from the foetus to the placenta

Question 7

what does the umbilical vein do

Answer 7

takes nutrients and oxygen from the placenta back to the foetus

Question 8

why are the various By passes required in a foetus

Answer 8

The bypasses in the foetal circulation are designed to make the delivery of oxygen and nutrients more efficient to the foetal tissues

Question 9

what are the changes to the mother after birth

Answer 9

1. the uterus contracts and returns to its normal size
2. blood volume decreases and returns to normal
3. emotional experience becomes intense as the baby is born and fluctuation of hormones levels return to normal
4. return of menstruation shows the reproductive system has returned back to normal