Practical

Question 1

Which arteries of the edometrium fill the intervillous spaces with maternal blood?

Answer 1

Endometrial spiral arteries

Question 2

What would your primary concern be if cotyledon was missing from a delivered placenta?

Answer 2

Post partum haemorrhage

Question 3

What are the contents and direction of flow of the umbilical arteries?

Answer 3

Deoxygenated blood to placenta

Question 4

What are the contents and direction of flow of the umbilical veins?

Answer 4

Oxygenated to fetus

Question 5

What does the umbilical vein become?

Answer 5

Ligamentum teres

Connects liver and umbilicus

Question 6

In fetus, blood bypasses liver, via which vessel does the shunt take place and what does the vessel become when it closes at birth?

Answer 6

Ductus venosus

Ligamentum venosus

Question 7

What do the umbilical arteries become in the adult?

Answer 7

Distal part = medial umbilical ligament

Proximal part = superior vesical arteries

Question 8

What 2 modifications to the structure of the circulatory system in the foetus allow oxygenated blood to be obtained from the placenta

Answer 8

Foramen ovale (connects atria)  -> Fossa  ovalis 
Ductus arteriosus (shunt between aorta and pulmonary trunk) -> Ligamentum arteriosum