Embryology Flashcards Preview

1MB Cardiology > Embryology > Flashcards

Flashcards in Embryology Deck (17)
Loading flashcards...
1
Q

Which germ layer forms the heart?

A

Mesoderm

2
Q

Name the 5 parts of the heart tube, from cranial to caudal end (the baby verily acquires stuff…)

A
Truncus arteriosus
Bulbus cordis
Ventricle
Atrium
Sinus venosus
3
Q

What does the truncus arteriosus of the heart tube produce?

A

Aorta

Pulmonary trunk

4
Q

What does the bulbus cordis of the heart tube produce?

A

Right ventricle

Outflow of both ventricles

5
Q

What does the ventricle of the heart tube produce?

A

Left ventricle

6
Q

What does the atrium of the heart tube produce?

A

Right and left atria

7
Q

What does the sinus venosus of the heart tube produce?

A

Right atrium

Coronary sinus

8
Q

Which 3 vessels enter the right + left horns of the sinus venosus?

A

Vitelline vein
Umbilical vein
Cardinal veins

9
Q

What does the vitelline vein drain?

A

Yolk sac

10
Q

What does the umbilical vein drain?

A

Placenta

11
Q

What do the cardinal veins act as precursors for?

A

The systemic venous system

12
Q

Remnants of the left horn of the sinus venosus give rise to the coronary sinus. True/False?

A

True

13
Q

What is the function of the ductus venosus?

A

Directs O2-rich blood from placenta (umbilical vein) to IVC, bypassing the liver

14
Q

What is the function of the foramen ovale?

A

Directs O2-rich blood from RA to LA so it goes to brain and not lungs

15
Q

What is the function of the ductus arteriosus?

A

Directs deoxygenated blood from pulmonary artery to descending aorta so it goes to placenta to get O2

16
Q

What is the remnant of the umbilical vein in adults?

A

Ligamentum teres

17
Q

What is the remnant of the ductus arteriosus in adults?

A

Ligamentum arteriosum