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Flashcards in Development of Vasculature Deck (74)
1

Blood vessels develop from

Angioblastic cords from mesoderm

2

Livers role

Main hematopoietic organ until others take over

3

Where do small blood vessels first form and what do they become?

In extraembryonic mesoderm of connecting stalk
Umbilical cord

4

When folding is occurring, where are blood vessels developing and are they connected?

IN yolk sac, vitelline duct, and connecting stalk
No

5

Prominant artery during folding

Dorsal aortae

6

Each pharyngeal arch will have ______ and what are they derived from?

a pair of aortic arches
From aortic sac of heart

7

Aortic arches connect distally to

Pair of dorsal aortae

8

Dorsal aortae connect to yolk sac by _____ and placenta by _____

Vitelline art
Umbilical art

9

Three vitelline arteries survive to become______

Unpaired arteries of adult that supply foregut, midgut, and hindgut

10

Remnants of umbilical arteries

Ligamentous remnants from internal iliac artery

11

Lateral folding and dorsal aortae

Causes the two dorsal aorta to form a single aorta caudal to the neck
In neck and head, they remain separate

12

Distally, two dorsal aorta fuse to form

Common aorta

13

Aortic sac

Rostral common outflow of developing heart and connects heart to pairs of aortic arches

14

Truncus arterioies

Common tube leading from heart to aortic sac
Forms asecnding aorta and pulmonary trunk

15

1st aortic arch...what does it form and when does it form

First and disappears first
Forms maxillary artery that supplies deep regions of face

16

2nd aortic arch...what does it and form and when

Begins to lose connection with aortic sac after formed but still connected to dorsal aorta
Forms stapedial artery which regresses

17

Dorsal aorta between which two arches is lost?

3rd and 4th

18

Postion of dorsal arota cranial to 3rd aortic arch forms

Continuous tube with 3rd arch

19

External carotid from

proximal part of 3rd aortic arch

20

Common arotid from

Part of 3rd aortic arch proximal to external arotids origin

21

Aortic sac regresss where?

In region where 3rd aortic arch arises

22

What is notable segmental artery?

7th cervical intersegmental artery sprouts from each dorsal aorta proximal to their fusion

23

Where do segmental arteries arise forom

Dorsal aorta

24

4th aortic arches fate

Remain associated with aortic sac

25

6th aoritc arches fate

Remain associated with aortic sac and trunucs arteroisis

26

Truncus arteriosis and aortic sac undergo septation to form

Pulmonary trunk and ascending aorta

27

aortic sac associated with which arch is lost?

6th

28

6th aortic arch becomes continuous with

Truncus arteriosis

29

What sprouts from 6th aortic arch?

Right and left pulmonary arteries

30

Which portion of 6th aortic arch is lost?

Right part distal to the sprouting artery

31

What part of 7th intersegmental is lost

Right dorsal aorta

32

Continuous vessel form between which after 7th segmental artery loses right dorsal aorta

Right dorsal aorta, right 7th intersegmental, right 4th aortic arch

33

Right 4th aortic arch becomes

Right subclavian

34

3rd aortic arches become

Common carotid, proximal part of internal carotid, external carotid

35

Left 4th aortic arch becomes

Aortic arch between left common carotid and left subclavian artery

36

Right 4th aortic arch becomes

Proximal part of subclavian artery

37

Prixmal right and left 6th aortic arches become

Proximal parts of right and left pulmonary arteries

38

Distal left 6th aortic arch forms

Ductus arteriosis

39

Aortic sac associated with and forms

4th arch
Ascending aorta, part of arch of aorta, right brachiocephalic artery

40

Right dorsal aorta forms

Intermediate portion of right subclavian artery

41

7th intersegmental arteries form

Parts of right subclavian and all of left subclavian

42

Left dorsal aorta forms

Descending aorta

43

Double aortic arch

Right dorsal aorta persists between 7th intersegmental artery and junction with left dorsal aorta
Can compress trachea and esophagus

44

Coarctation of aorta

Constriction of aorta mostly at ductus arteriosis

45

Postductal coarctation

Constriction just distal to ductus arteriosis
Permits development of collateral circulation during fetal development that helps supply blood to inferior parts of body

46

Preductal coarctation

If severe, can be given prostaglandin E2 to try to reopen ductus arteriosis

47

Liver invades _____ and causes them to form _____

Both vitelline veins
Hepatic sinusoids

48

Parts of hepatic sinusoids coalesce to form

Ductus venosus

49

What anastomoses with ductus venosus

Left umbilical vein

50

Right vitelline vein distal to liver becomes

Hepatic portal vein
Superior mesenteric vein

51

Hwat becomes umbilical vein?

Distal portion of left umbilical vein

52

Ductus venosus allows

Blood to enter directly enter heart

53

Left umbilical vein atrophies to becomes

Ligamentum teres hepatis

54

Ductus venosus atrophies to becomes

Ligamentum venosum

55

Anterior and posterior cardinal veins drain

Blood from head and neck
Remainder of embryo

56

Common cardinal drains to

Sinus venosus

57

Distal right anterior cardinal vein becomes

Brachipcephalic vein (right)

58

Anastomosis between right and left anterior cardinal veins and remainder of rostral left cardinal vein becomes

left brachiocephalic vein

59

Proximal right anterior cardianl vein and right common cardinal vein becomes

Superior vena cava

60

Supracardinal veins develop from what and receive drainage from

Posterior cardinal veins - eventually anastomose
Somite segmental veins

61

Which supracardinal vein loses connection and where odes it drain

Left proximal
Drains to left proximal posterior cardinal vein

62

Right supracardinal vein becomes

Azygos vein

63

Left proximal supracardinal vein becomes

Accessaory hemiazygos vein

64

Left distal supracardinal vein becmes

Hemiazygos veins

65

Supracardinal veins become

azygos system

66

Segmental vessels become

intercostal veins

67

Which part of cardinal veins persist and what do they become?

Caudal posterior cardinal veins
Become part of interior vena cava and common iliac

68

Subcardinal veins form

Part of IVC

69

Right subcardinal vein connects to

Supracardinal vein

70

Right subcardinal vein loses connection to

Right posterior cardinal vein

71

IVC formation

Right vitelline - hepatic
Right subcardinal - suprarenal
Supracardinal - infrarenal
POsteroir cardinal - caudal and common iliac veins

72

Loss of right sixth aortic arch allows

Right recurrent loop of vagus to loop around right fourth aortic arch

73

Left sixth aortic arch is

Maintain and left recurrent says in same position

74

Which recurrent branch of vagus nerve is higher?

Right