Development of Veins

Question 1

Persistence of which vein and absence of which anastomoses will result in DOUBLE SUPERIOR VENACAVA?

Answer 1

Left Anterior cardinal vein
Oblique anastomoses

Question 2

Left anterior cardinal vein opens into left common cardinal vein and it in turn opens into left horn of sinus venosus which forms what?

Answer 2

Coronary sinus

Question 3

Left side superior venacava opens into what sinus?

Answer 3

Coronary sinus

Question 4

Right anterior cardinal vein opens into right common cardinal vein which inturn opens into right horn of sinus venosus which forms what?

So the right side sup vencava if present opens into what ?

Answer 4

Posterior wall of right atrium

Question 5

Cranial part of right vitelline vein will form what channel which inturn forms the cranial part of IVC?

Answer 5

Right hepatocardiac channel

Question 6

Subcardinal vein contribute in the formation of:

Answer 6

IVC
RENAL VEIN
GONADAL VEIN

Question 7

Supracardinal vein contributes in the formation of :

Answer 7

IVC
INTERCOSTAL VEIN
AZYGOS SYSTEM OF VEIN (azygos , hemi azygos, etc)

Question 8

Superior mesenteric vein is derived from:

Answer 8

RVV > LVV
1.Right vitelline vein (RVV)
2.Distal ventral anastomoses
3.small part of left vitelline vein LVV below the splenic vein .

Question 9

Right and left branch of portal vein is derived from ?

Answer 9

Right branch: RVV above proximal ventral anastomoses

Left branch: proximal ventral anastomoses and LVV above proximal ventral anastomoses