what embryonic structures give rise to SVC/IVCRight common cardinal vein and right anterior cardinal vein→ SVC
Posterior, subcardinal, and supracardinal veins→ IVC cardiologyembryology HirotoShishido
Pierre Robin sequencemicrognathia, glossoptosis, cleft palate, airway obstruction(☆improve with prone position)
thyroid
embryologythyroid arises from floor of primitive pharynx and descends into neck through thyroglossal duct embryologyendocrinology HirotoShishido
two types of cysts on the neck(birth defect)thyroglossal duct cyst→presents as an anterior midline neck mass which ☆moves with swallowing
the reason why phenytoin trigger neural tube defectchronic phenytoin use changes PH in the gut into 10-12, which reduces folate uptake(optimal PH for folate is 5〜5.5) pharmacologyembryologyOBGY HirotoShishido
sinus hornright sinus horn→openings of superior vena cava and inferior vena cava
aortic arches
①when does it exist ②where does it come from ③what Ⅲ,Ⅳ,Ⅵ develop into①weeks 4-6
②sprout from aortic sac
③Ⅲ→common carotids
Ⅳ→lt aortic arch
rt right subclavian
Ⅵ→pulmonary arteries
(+left→ductus arteriosus) embryology HirotoShishido
4 structure which is fused after the lateral foldingdorsal aortae→aortic sac
heart tubes→primitive heart tube
vitelline veins→sinus venosus
pericardial cavities cardiologyembryology HirotoShishido
