Embryology Flashcards
Prior to week 3 what does the heart consist of?
A pair of tubes
What week does the heart begin to beat?
Week 4 and at about 60-70 BPM
The distal portion of the bulbus cordis is also called the what?
Truncus Arteriosus
The aortic sac is composed of five pairs of arches and will ultimately form what?
The arch and its branches
What carries oxygenated blood to the fetus?
Umbilical vein
Deoxygenated blood returns to the placenta by what?
Umbilical arteries. The iliac arteries give rise to the umbilical arteries
What forms the IVC and SVC
The sinus venosus
What is the name of the shunt between the LA and RA
Foramen Ovale
Remnant of the ductus arteriosus is called the what?
Ligamentum arteriosum
What divides to form the aorta and the main pulmonary artery?
Truncus Arteriosus
The endocardial cushions form what two valves?
Mitral and tricuspid
