CV Development Flashcards
What are the four heart fields when referring to the tissues that give rise to the heart?
Primary (cardiac crescent) - endocardium, myocardium
Secondary - contributes to arterial and venous ends
Tertiary (proepicardium) - gives rise to epicardium, coronary arteries, fibroblasts
Quaternary (cardiac neural crest) - smooth muscle of great vessels, parasympathetic neurons
On what days does septation occur?
Days 25-28
Which pharyngeal arches does neural crest travel through to form the bulbar and truncal ridges?
3, 4, and 6
What day are the septum primum and foramen primum formed, approximately?
Day 28
Around what days is the foramen secundum formed?
Days 32-35
When is the atrial septation finished by with the septum secundum and foramen ovale functioning?
5th-8th weeks
When do the pharyngeal arch arteries form? When do their derivatives form?
4th week. 8th week
What is the fate of the third pharyngeal arch artery?
Becomes the common carotid arteries
What is the fate of the 4th pharyngeal arch artery?
Right: base of the subclavian artery
Left: aortic arch between the common carotid and subclavian arteries
What is the fate of the 6th pharyngeal arch artery?
Right: pulmonary artery
Left: pulmonary artery and ductus arteriosus
What do the vitelline veins become?
Hepatic portal system, hepatic sinusoids, SMV, first part of IVC
What does the umbilical vein become?
Ductus venosus, ligamentum venosum within the liver, ligamentum teres (of the liver) outside of the liver
What do the anterior cardinal veins become?
Brachiocephalic veins, jugular veins, subclavian veins
What do the subcardinal veins become?
3rd part of IVC, renal veins, gonadal veins
What do the supracardinal veins become?
Azygous system and lumbar veins
