embryology Flashcards
Bulbus cordis
ventricular system
3rd + 4th + 6th pharyngeal arches
aortic arch near where the coarctation happens
Sup. malignment of the subpulmunary infundibulum
TOF
TOF clues
- Pulm stenosis
- VSD
- overriding the aorta
- right ventricular hypetrophy
Septum secundum
Septum between 2 Atria
Septum primum
divide atrium from left and right
something wrong with the aorticopulmonary septum
transposition of the great vessels
Truncas arteriousus leads to the
Aorta
Bulbous cords leads to
Pulmonary trunk
Bulbous septum leads to
interventricular spetum
The fetal left atrium is mainly derived from the:
primordial pulmonary vein
The fetal right atrium is mainly derived from the:
sinus venosus
Closure of the foramen primum results from fusion of the:
septum primum and endocardial cushions
Transposition of the great arteries was diagnosed in a male infant with obvious cyanosis and mild rapid breathing. This condition results from:
faulty partitioning of the bulbus cordis and truncus arteriosus
The proximal part of the pulmonary arteries is formed by which aortic arch?
Sixth
Which of the following forms the right subclavian artery?
aortic arch 4 and 7th intersegmental artery
The endocardial heart tubes which coalesce to form the primitive heart are derived from which of the following germ layers?
mesoderm
The proximal (ascending) part of the aorta is formed from which of the following?
The truncus arteriosus forms the ascending aorta.
A failure of the atrioventricular cushions to fuse will lead to which of the following malformations?
persistent common atrioventricular canal
A partial development of the aorticopulmonary septum will lead to which of the following malformations?
Failed aorticopumonary septal development results in persistent truncus arteriosus, which requires ventricular septal defect in order to survive.
Excessive resorption of the septum primum or septum secundum will lead to:
The septum primum has two holes (ostium primum and secundum), while the septum secundum has one. Before these septa fuse, the opening is called the foramen ovale. When these two septa fuse at birth, the remnant is the fossa ovale. Excessive resorption of one of the septa leads to ostium secundum atrial septal defect.
A misaligned development of the aorticopulmonary septum will lead to
TOF
A non-spiral development of the aorticupulmonary septum may lead to which of the following?
Transposition
The common carotid artery is derived from which of the following aortic arches?
arch 3
The embryonic origin of the ligamentum arteriosum is from the:
6th arch
aortic arches
join the aortic sac to the dorsal aorta
right horn of the sinus venosus
forms the smooth walled portion of the right atrium
