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CPR > Development of Great Vessels > Flashcards

Development of Great Vessels Flashcards

1
Q

Where is the aortic sac?

A

Expansion at distal truncus arteriosus

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2
Q

What arteries arise from the aortic sac?

A

Aortic Arches (AA)

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3
Q

What do the aortic arches connect?

A

Aortic sac to the Dorsal Aorta

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4
Q

How many pairs of aortic arches are there?

A

6 pairs

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5
Q

Through what processes are aortic arches formed?

A

Vasculogenesis and Angiogenesis

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6
Q

What 3 changes are made to achieve the adult vessel pattern?

A
  1. Hypertrophy of some (AA 3, 4, 6)
  2. Addition of new vessels
  3. Loss of some vessels
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7
Q

At what spinal level do the dorsal aorta fuse and continue caudally?

A

T4

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8
Q

What arteries run between somites and connect with the dorsal aorta?

A

Intersegmental arteries

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9
Q

Cervical intersegmental arteries become?

A

Vertebral arteries

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10
Q

7th Cervical intersegmental artery becomes what on the left?

A

Left subclavian

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11
Q

7th Cervical intersegmental artery becomes what on the right?

A

PORTION of the Right subclavian

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12
Q

Thoracic intersegmental arteries become?

A

Internal thoracics and Intercostals

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13
Q

Lumbar intersegmental arteries become?

A

Epigastric and iliac vessels

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14
Q

AA 1

A

Maxillary A.

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15
Q

AA 2

A

Stapedial A.

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16
Q

AA 3

A

Common carotid, proximal internal carotid and external carotid

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17
Q

AA 4 on the left

A

Part of Aortic Arch

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18
Q

What form the Aortic Arch?

A

Aortic sac
AA 4 on the left
Left dorsal aorta

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19
Q

AA 4 on the right

A

Proximal right subclavian A.

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20
Q

AA 5

A

NEVER REALLY FORMS

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21
Q

AA 6

A

Pulmonary arteries

22
Q

On the left side, what is retained from AA 6 and affects recurrent laryngeal nerve path?

A 
Ductus arteriosus (ligamentum arteriosum)
- Left recurrent laryngeal nerve loops around it
23
Q

On the right side, what happens to AA 6 and how does that affect the recurrent laryngeal nerve path?

A

Distal part regresses away from dorsal aorta and so the right recurrent laryngeal nerve loops around the right subclavian

24
Q

What happens to the portion of the dorsal aortas between AA 3 and 4?

A

= carotid duct == obliterated

25
Q

The right dorsal aorta ____ from 7th intersegmental A. to junction with left dorsal aorta

A

Disappears

26
Q

Supplies yolk sac and eventually becomes GI vasculature

A

Vitelline arteries

27
Q

Paired ventral branches of dorsal aorta that go to placenta and bladder

A

Umbilical arteries

28
Q

Oxygen rich blood bypasses the liver and enters?

A

IVC and Right atrium

29
Q

Where does a majority of the blood go once its in the right atrium?

A

Through the foramen ovale to get to the left atrium

30
Q

Left atrial blood goes to the left ventricle and then on to the ascending aorta to reach?

A

Arteries of heart, head, neck, upper limbs

31
Q

What is special about the blood that reaches the arteries of the heart, head, neck, and upper limbs?

A

It has the HIGHEST Oxygen content!

32
Q

Where does some of the blood go once its in the right atrium?

A

Right ventricle

33
Q

If blood enters the right ventricle, where does 90% go from there?

A

To pulmonary trunk – Ductus arteriosus – Descending aorta (bypasses lungs)

34
Q

Approximately how much blood goes into the lungs?

A

10%

35
Q

Ductus arteriosus connects?

A

Pulmonary trunk with descending aorta to bypass the lungs

36
Q

Most of the blood in the SVC goes to the?

A

Right ventricle

37
Q

Vitelline veins form what in the liver primordia?

A

Hepatic sinusoids

38
Q

The right vitelline vein forms?

A

Right hepatocardiac channel that becomes the inferior IVC

39
Q

Umbilical veins pass on either side of the?

A

Liver

40
Q

Do umbilical veins connect to hepatic sinusoids?

A

Yes

41
Q

Which umbilical vein ends up being the only one to carry blood to the liver?

A

Left umbilical vein

42
Q

What does the ductus venosus connect?

A

Left umbilical vein and the right hepatocardiac channel

43
Q

What drain the body of the embryo?

A

Cardinal veins

44
Q

Anastomosis between what form the left brachiocephalic vein?

A

Right anterior cardinal vein and the Left anterior cardinal vein

45
Q

When is a common cardinal vein formed?

A

When the anterior and posterior cardinal veins join

46
Q

What forms the SVC?

A

Right common cardinal vein

47
Q

What does the left cardinal vein form?

A

Coronary sinus

48
Q

Proximal right subclavian A is formed from?

A

AA 4 on the right

49
Q

Distal right subclavian A is formed from?

A

7th Cervical Intersegmental A.

50
Q

What are the 3 main veins in the venous system during development?

A

Vitelline
Umbilical
Common Cardinal

CPR (48 decks)

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