Cardiovascular Embryology Flashcards
The endothelial layer of the tube forms the:
Endocardium
Splanchnic mesoderm surrounding the heat tube will form the:
Myocardium
The truncus arteriosus becomes:
Proximal aorta and proximal pulmonary artery
The primitive ventricle becomes:
Trabeculated right and left ventricles
The sinus venosus becomes:
Smooth part of right atrium, coronary sinus and oblique vein
The bulbus cordis becomes:
Smooth parts of the right ventricle and part of left ventricle
The primitive atrium becomes:
Right and left atria
During cardiac development neural crest cells form:
Septation of the outflow tract.
The fibrous portion of the cardiac valves are formed by:
Endocardial cells that differentiate into mesenchymal cells
AV valve formation (2):
- Delamination of leaflets from the superficial layers of ventricular myocardium
- Incorporate endocardial cushions and maintain fibrous continuity with trabeculated portion of the ventricle
Membranous ventricular septum is formed by the fusion of (3):
- Right bulbar ridge of bulbus cordis
- Left bulbar ridge of bulbus cordis
- Atrioventricular septum (“endocardial cushions”)
The first aortic arch forms:
Maxillary and external carotid artery
The second aortic arch forms:
Stapedial and hyoid aa.
The third aortic arch forms:
Common carotid aa. and proximal internal carotid aa
The fourth aortic arch forms:
Left side: aortic arch
Right side: innominate/subclavian
