Vessel embryology Flashcards Preview

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Flashcards in Vessel embryology Deck (25):
1

Derivatives of 1st pharyngeal arch a.

(light blue)

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  • a. maxillaris
  • a. carotis ext.

2

Derivatives of 2nd pharyngeal arch a.

(light orange)

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a. stapedia

3

Derivatives of 3rd pharyngeal arch a.

(red)

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  • proximally: a. carotis comm.
  • distally: 1st part of a. carotis int.

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4

Derivatives of 4th pharnygeal arch a.

(brown)

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  • left: arcus aorticus
  • right: proximal part of a. subclavia dextra

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5

Derivatives of 6th pharyngeal arch a.

(blue)

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  • left: 
    • a. pulmonalis sinistra
    • ductus arteriosus Botalli
  • right:
    • a. pulmonalis dextra

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6

How do the aa. coronariae develop?

  1. stem cells from liver migrate into heart tube
  2. vascular channels form peritruncal ring
  3. prox. portions survive → a. coronaria dex./sin.
  4. distally: epicardium forms remaining parts by epithelio-mesenchymal transformation

7

Where do the different parts of the aorta originate from?

  • aorta ascendens: truncus arteriosus, aortic sac
  • arcus aorticus: left 4th pharyngeal arch a.
  • aorta descendens: left aorta dorsalis

8

Where do the aa. subclaviae originate from?

  • left: left 7th a. intersegmentalis
  • right:
    • proximally: right 4th pharyngeal arch a.
    • medially: right aorta dorsalis
    • distally: right 7th a. intersegmentalis

9

Where do the vitelline aa. originate from? 

What do they form?

Another name.

= a. omphalomesenterica

originate from aorta dorsalis

form: unpaired aortic branches

  • truncus coeliacus: supplies foregut
  • a. mesenterica sup.: supplies midgut
  • a. mesenterica inf.: supples hindgut

10

Where do the aa. umbilicales originate from?

What do they form?

originate from aorta dorsalis

form:

  • a. iliaca int.
  • lig. umbilicale mediale

11

What do the vitelline vv. form?

  • hepatic sinusoids in liver
  • vv. revehentes
  • right: hepatic portal system = vv. advehentes, IVC hepatocardiac segment
  • left: regresses

12

What do the vv. umbilicales form?

Remnants?

  • right: degenerates
  • left:
    • cranial part degenerates
    • caudal part → v. umbilica (→ lig. teres hepatis)

13

What is connected by the ductus venosus?

Remnants?

v. umbilica + IVC hepatocardiac segment 

→ lig. venosum

14

What do the 2 vv. cardinales ant. form?

What does this structure become?

anastomosis → v. brachiocephalica

15

Which structures contribute to the SVC?

v. cardinalis ant. dextr. + v. cardinalis communis dextra

16

Give another name for v. cardinalis communis

ductus Cuvieri

17

What happens to the v. cardinalis ant. sinistra?

caudal part degenerates → lig. v. cavae sin.

18

Which structure is formed by the v. cardinalis communis sinistra?

Marshall v.

19

What does the v. cardinalis post. dextra form?

  • root of v. azygos
  • v. iliaca int.

20

Where does the v. cardinalis post. sin. enter into and eventually form?

enters into v. brachiocephalica sinistra → v. intercostalis sup. sin.

21

What do the vv. subcardinales form?

  • form an anastomosis with each other
  • left renal v.
  • suprarenal vv.
  • gonadal vv.
  • IVC prerenal, renal segments

22

Which vv. contribute to the v. azygos?

  • 4th + 11th v. intercostalis
  • v. supracardinalis dextra
  • v. cardinalis post. dextra

23

Which vv. contribute to the v. hemiazygos?

  • 4th + 7th v. intercostalis
  • v. supracardinalis sinistra

24

What do the vv. supracardinales form caudally to the kidneys?

  • right: IVC postrenal segment
  • left: degenerates

25

What are the segments of the IVC and by what are they formed?

​in craniocaudal direction:

  1. hepatocardiac: right v. omphalomesenterica, vv. revehentes 
  2. prerenal: right subcardinal + anastomosis vv. subcardinales
  3. renal: anastomosis right sub-/supracardinal v.
  4. postrenal: distal part right supracardinal v.