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IUSM Anatomy KG > Development of the Cardiovascular System > Flashcards

Flashcards in Development of the Cardiovascular System Deck (17)
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1

What is the first embryonic system to become functional?

circulatory

2

When does blood flow begin

by the end of the third week

3

What do the original heart tubes develop from?

splanchnic mesoderm of the cardiogenic area

4

When does the heart begin to beat?

22 to 23 days

5

In the developing circulatory system what do vitelline veins do?

Return poorly oxygenated blood from the umbilical vesicle (yoke sac)

6

What do umbilical veins do?

Carry well-oxygenated blood from the chorionic sac

7

What do common cardinal veins do?

return poorly oxygenated blood from the body of the embryo

8

In the primordial heart what does the arterial system connect to?

truncus arteriosus

9

In the primordial heart what does the venus system connect to?

sinus venosus

10

During development the _________ side of the sinus venosus enlarges and there is a shift towards the _____ side for venus return

right

11

What is the fate of the left region of the sinus venosus?

coronary sinus

12

What is the fate of the right region of the sinus venosus?

incorporated into the wall of the right atrium

13

Cardinal veins have an anastomosis between them of subcardinal veins, which gives rise to the ?

Inferior Vena Cava

14

_______ veins anastomosis and supply blood to the early liver

vitelline

15

Why is there only one vein in the umbilical cord?

Right umbilical vein disappears and the left is persistent

16

The liver buds off of what?

the gut tube

17

What supplies blood to the gill arches

pharyngeal aortic arches