Development of veins Flashcards
Large embryonic veins
Blood reaches the sinus venous of the heart from ____ (3 veins)
Vitelline and Umbilical Drainage Pattern
Initially, the umbilical and vitelline veins drain into ____ on each side of the body.
the common cardinal vein
Vitelline and Umbilical Drainage Pattern
Initially, ____ and ____ drain into the common cardinal vein on each side of the body.
the umbilical and vitelline veins
Vitelline and Umbilical Drainage Pattern
Proximally, vitelline veins become surrounded by the growing ____ from the foregut.
liver buds
Vitelline and Umbilical Drainage Pattern
Meanwhile, ____ develop connections to both the vitelline and common cardinal veins.
the umbilical veins
Vitelline and Umbilical Drainage Pattern
Proximally, vitelline veins become surrounded by the growing liver buds from the ____
foregut.
Vitelline and Umbilical Drainage Pattern
Proximally, ____ become surrounded by the growing liver buds from the foregut.
vitelline veins
Vitelline and Umbilical Drainage Pattern
Meanwhile, the umbilical veins develop connections to both ____ and ___
the vitelline and common cardinal veins.
Liver Drainage Shifts in Vitelline and Umbilical Drainage Pattern
The vitelline veins form ___ within the liver and the umbilical veins drain into them.
the vascular sinusoids
Liver Drainage Shifts in Vitelline and Umbilical Drainage Pattern
The vitelline veins form the vascular sinusoids within the liver and the umbilical veins drain into them.
→ However, ____ remains open and allows blood from the left umbilical vein to reach the heart while largely bypassing the liver sinusoids.
a large vascular space, the ductus venosus
Cardinal Veins and Large Veins
The right umbilical vein dwindles and all blood from the placenta travels through _____ (3) to reach the right atrium.
- the left umbilical vein
- ductus venosus
- inferior vena cava
Cardinal Veins and Large Veins
The right umbilical vein dwindles and all blood from the placenta travels through the left umbilical vein, ductus venosus, and inferior vena cava to reach ___
the right atrium.
Cardinal Veins and Large Veins
The vitelline veins form ____ and _____
the liner sinusoids and hepatic veins.
Cardinal Veins and Large Veins
The vitelline veins form the liner sinusoids and hepatic veins.
→ Only ____ retains a connection to the inferior vena cava.
the right vitelline vein
Cardinal Veins and Large Veins
More distally, the vitelline veins form the ____
branches of the hepatic portal vein.
Cardinal Veins and Large Veins
More distally, ____ form the branches of the hepatic portal vein.
the vitelline veins
Development of the Subcardinal Anastomosis
The common cardinal veins also receive blood from ___ and ___
anterior cardinal veins and posterior cardinal veins.
Development of the Subcardinal Anastomosis
_____ also receive blood from anterior cardinal veins and posterior cardinal veins.
The common cardinal veins
Development of the Subcardinal Anastomosis
Subcardinal veins form ____ that drain to the posterior cardinal veins.
a venous network in the developing kidney
Development of the Subcardinal Anastomosis
Subcardinal veins form a venous network in the developing kidney that drain to ___
the posterior cardinal veins
Development of the Subcardinal Anastomosis
Subcardinal veins form a venous network in the developing kidney that drain to the posterior cardinal veins.
→ They eventually expand and meet as ____
the subcardinal anastomosis.
Development of the Subcardinal Anastomosis
____ form a venous network in the developing kidney that drain to the posterior cardinal veins.
→ They eventually expand and meet as the subcardinal anastomosis.
Subcardinal veins
Development of Supracardinal Veins
Inferiorly, blood from iliac veins enters ____
the posterior cardinal veins.
Development of Supracardinal Veins
Inferiorly, blood from ____ enters the posterior cardinal veins.
iliac veins
Development of Supracardinal Veins
The supracardinal veins develop off of ____ and drain the posterior aspect of the body.
the posterior cardinal veins
Development of Supracardinal Veins
As supracardinal veins grow, parts of the posterior cardinal veins rescind.
→ The inferior vena cava begins forming as the right vitelline vein fuses to____
the subcardinal anastomosis.
Development of Supracardinal Veins
As supracardinal veins grow, parts of the posterior cardinal veins rescind.
→ ___ begins forming as the right vitelline vein fuses to the subcardinal anastomosis.
The inferior vena cava
Development of Supracardinal Veins
Superiorly, the anterior cardinal veins drain the head and upper limb, developing into ___ and ___
the jugular and subclavian veins.
Development of Supracardinal Veins
Superiorly, the anterior cardinal veins drain ____ and ___, developing into the jugular and subclavian veins.
the head and upper limb
Development of Supracardinal Veins
The inferior vena cava begins forming as ____ fuses to the subcardinal anastomosis.
the right vitelline vein
Shifts in Cardinal Vein Drainage
____ develops between right and left posterior cardinal veins in the pelvis.
→ Blood then drains into the supracardinal veins.
The iliac anastomosis
Shifts in Cardinal Vein Drainage
The iliac anastomosis develops between ____ and ___ in the pelvis.
→ Blood then drains into the supracardinal veins.
right and left posterior cardinal veins
Shifts in Cardinal Vein Drainage
The iliac anastomosis develops between right and left posterior cardinal veins in the pelvis.
→ Blood then drains into t____
The supracardinal veins.
Shifts in Cardinal Vein Drainage
Superiorly, ____ develops between the right and left anterior cardinal veins.
, a brachiocephalic anastomosis
Shifts in Cardinal Vein Drainage
Superiorly, , a brachiocephalic anastomosis develops between ___ and ___
the right and left anterior cardinal veins.
Shifts in Cardinal Vein Drainage
The kidneys and gonads drain into ____ , which loses its connection to the posterior cardinal veins but connects to the supracardinal veins.
the subcardinal anastomosis
Shifts in Cardinal Vein Drainage
The kidneys and gonads drain into the subcardinal anastomosis , which loses its connection to ___ but connects to the supracardinal veins.
the posterior cardinal veins
Shifts in Cardinal Vein Drainage
The iliac anastomosis develops between right and left posterior cardinal veins in____.
→ Blood then drains into the supracardinal veins.
the pelvis
Shifts in Cardinal Vein Drainage
___ and ___ drain into the subcardinal anastomosis, which loses its connection to the posterior cardinal veins but connects to the supracardinal veins.
The kidneys and gonads
Disappearance of Posterior Cardinal Vein
The connection between ____ and ____ disappears.
→ The right supracardinal vein expands and drains to the subcardinal anastomosis.
the left posterior cardinal vein and left supracardinal vein
Disappearance of Posterior Cardinal Vein
The connection between the left posterior cardinal vein and left supracardinal vein disappears.
→ ____ expands and drains to the subcardinal anastomosis.
the right supracardinal vein
Disappearance of Posterior Cardinal Vein
The connection between the left posterior cardinal vein and left supracardinal vein disappears.
→ The right supracardinal vein expands and drains to ____
the subcardinal anastomosis.
Disappearance of Posterior Cardinal Vein
The connection between the left posterior cardinal vein and left supracardinal vein disappears. The right supracardinal vein expands and drains to the subcardinal anastomosis.
→ The inferior vena cava now has contributions from_____ (4)
- the right vitelline vein
- subcardinal anastomosis
- right supracardinal vein
- a small portion of right posterior cardinal vein.
Disappearance of Posterior Cardinal Vein
Yet another anastomosis develops between the remaining section of the right and left supracardinal veins.
→ They will become ____
the azygos system of veins.
Disappearance of Posterior Cardinal Vein
Another anastomosis develops between ___ and ___
→ They will become the azygos system of veins.
the remaining section of the right and left supracardinal veins.
Establishment of Mature Venous Drainage
____ and ___ contribute to the superior vena cava.
The left common cardinal vein detaches from the anterior and posterior cardinal veins and remains in the heart as the coronary sinus.
The right common and anterior cardinal veins
Establishment of Mature Venous Drainage
The right common and anterior cardinal veins contribute to ____
The left common cardinal vein detaches from the anterior and posterior cardinal veins and remains in the heart as the coronary sinus.
the superior vena cava.
Establishment of Mature Venous Drainage
The right common and anterior cardinal veins contribute to the superior vena cava.
→ The left common cardinal vein detaches from the anterior and posterior cardinal veins and remains in the heart as ____
the coronary sinus.
Establishment of Mature Venous Drainage
The right common and anterior cardinal veins contribute to the superior vena cava.
→ ____detaches from the anterior and posterior cardinal veins and remains in the heart as the coronary sinus.
The left common cardinal vein
Establishment of Mature Venous Drainage
The right common and anterior cardinal veins contribute to the superior vena cava.
→ The left common cardinal vein detaches from ____ and ___ and remains in the heart as the coronary sinus.
the anterior and posterior cardinal veins
Vitelline and Umbilical Drainage Pattern
→ Identify
Vitelline and Umbilical Drainage Pattern
→ Identify
Liver Drainage Shifts in Vitelline and Umbilical Drainage Pattern
→ identify
Liver Drainage Shifts in Vitelline and Umbilical Drainage Pattern
→ identify
Cardinal Veins and Large Veins
Development of the Subcardinal Anastomosis
Development of the Subcardinal Anastomosis (5 ½ weeks)
Development of Supracardinal Veins - week 6
Shifts in Cardinal Vein Drainage - 7 weeks
Disappearance of Posterior Cardinal Vein - 8 weeks
Establishment of Mature Venous Drainage
