Final Embryo - Great Vessel Development Flashcards Preview

► Med Misc 04 > Final Embryo - Great Vessel Development > Flashcards

Flashcards in Final Embryo - Great Vessel Development Deck (47):
1

What are the major pairs of veins draining into the sinus venosus

anterior and posterior cardinal creating the common cardinal
umbilical
vitelline

2

Which veins drain deoxygenated blood from yolk sac

vitelline

3

Which veins drain oxygenated blood from placenta

umbilical

4

Which veins drain deoxygenated blood from body of embryo

cardinal veins

5

Which cardinal vein drains the region superior to the heart

anterior cardinal

6

Which cardinal vein drains the region inferior to the heart

posterior cardinal

7

The left anterior cardinal vein develops an anastomosis with what

right anterior cardinal vein

8

The caudal portion of the left anterior cardinal vein degenerates becoming the what

left brachiocephalic vein

9

The right anterior cardinal vein becomes what

right brachiocephalic and superior vena cava

10

What do the posterior cardinal veins become

root of azygos vein and common iliac veins

11

What becomes of the right umbilical vein

it degenerates completely

12

What becomes of the left umbilical vein

it forms the ductus venosus
(ligamentum venosum in adults)

13

What is the ductus venosus

it is a venous shunt between the left umbilical vein and IVC
after week 7

14

What is the purpose of the ductus venosus

It takes the oxygenated blood right to the heart, bypassing the sinusoidal capillaries of the liver

15

What becomes of the left umbilical vein between the heart and liver

it degenerates

16

What is the left umbilical vein carrying

it is the only vessel carrying oxygenated blood to the embryonic heart

17

The right vitelline vein forms what

hepatic portion of IVC

18

What becomes of the left vitelline vein

it degenerates between the heart and liver

19

What do the right and left vitelline veins caudal to the liver form

the hepatic portal system

20

The dorsal aorta remain unfused where

in the region of the pharyngeal arches and distal to that it has fused to form the descending portion

21

How do pharyngeal arch artery pairs develop

craniocaudally with the pharyngeal arches

22

This arch artery never forms or is rudimentary and degenerates

5th arch

23

This pharyngeal arch largely degenerates and the remaining portion becomes the maxillary artery

1st pharyngeal arch

24

This pharyngeal arch largely degenerates but remaining portions become the stapedial artery

2nd pharyngeal arch

25

This pharyngeal arch becomes the common carotid and the proximal portions of the internal carotid

3rd pharyngeal arch

26

The right side of this pharyngeal arch becomes the

4th pharyngeal arch
forms proximal right subclavian artery

27

The left side of this pharyngeal arch forms

4th pharyngeal arch
forms aortic arch segment from left common carotid artery to left subclavian artery

28

The right proximal portion of this pharyngeal arch forms

6th pharyngeal arch
proximal right pulmonary artery

29

The left proximal portion of this pharyngeal arch forms

6th pharyngeal arch
proximal left pulmonary artery

30

The left distal portion of this pharyngeal arch forms

6th pharyngeal arch
ductus arteriosus (ligamentum arteriosum)

31

This nerve hooks under the 6th pharyngeal arch and elongates as its dragged caudally due to heart repositioning

recurrent laryngeal nerve

32

The right recurrent laryngeal nerve hooks behind what

right subclavian artery

33

The left recurrent laryngeal nerve hooks under what

ligamentum arteriosum

34

This forms the proximal portion of the aortic arch and the brachiocephalic trunk

aortic sac

35

This forms the ascending aorta and the pulmonary trunk

truncus arteriosus

36

The unfused portions on the left side of the dorsal aorta form what

rest of aortic arch distal to left subclavian artery

37

The vitelline arterial plexus form what

celiac trunk
SMA
IMA

38

The umbilical artery carries what

deoxygenated blood from embryo to placenta

39

The umbilical vein carries what

oxygenated blood from placenta to sinus venosus of embryonic heart

40

Each umbilical artery arises from what

from caudal dorsal aorta (site of future common iliac artery) and courses through connecting stalk to placenta

41

What does the umbilical artery form in adults

internal iliac (proximal)
superior vesical (proximal)
medial umbilical ligament (distal)

42

Where does the oxygen supply come before and after birth

before; from placenta
after; from lungs

43

What does the foramen ovale become after birth

fossa ovalis

44

What does the ductus arterioles become after birth

ligamentum arteriosum

45

What does the ductus venosus become after birth

ligamentum venosum

46

What does the umbilical vein become after birth

ligamentum teres hepatic

47

What does the distal umbilical artery become after birth

medial umbilical ligaments