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DIT embryo quickquiz

supplies oxygenated blood to the fetus umbilical vein
removes ntrogenous waste from the fetal bladder urachal duct
fetal placental structure that secretes hCG syncticiotrophoblast
maternal component of the placenta decidua basalis
returns deoxygenated bllod from the fetal internal iliac arteries umbilical arteries (2)
ascending aorta and pulmonary trunk = truncus arteriosus
coronary sinus = L horn of the sinus venosus
SVC = R common and ant cardinal vv
smooth parts of the left and right ventricle = bulbis cordis
smooth part of the RA = R hort of the sinus venosis
trabeculated left and right atrium = primitive atria
trabeculated parts of the L and right ventricle = primitive ventricle
what structure divides the truncus arteriosus into the aortic and pulmonary trunks aorticopulmonary septum aka spiral septum
what is the cellular origin of the aorticopulmonary septum neural crest cells
what is the order of fetal erythropoiesis yolk sac, liver, spleen, bone marrow
which bones in adults synthesize RBCs Ribs, Pelvis, Vertebra, skull, Sternum (tibia, femur)
Which fetal vessel has the highest oxygenation? umbilical v.
derived from the 3rd aortic arch common carotid/prox. ICA
derived from the 4th aortic arch L aortic arch, R proximal R subclavian
derived from the 6th aortic arch prox pulm a, L ductus arteriosus
a/w maternial lithium use ebstein's anomaly
tricuspid leaflets are displaced into RV, hypoplastic RV, tricuspid regurg/stenosis, dilated RA ebstein's anomaly
45 yo male presents with high BP in arms, but no palpable pulses in feet coarctation of the aorta - postductal (after lig arteriosum
blood flow through a PDA originally R to L (PA to aorta); as lung resistance decreases it becomes L to R (aorta to PA)
chromosome 22q11 truncus arteriosus, tetralogy of fallot
down syndrome endocardial cushion defects (ASD, VSD...)
congenital rubella septal defects, PDA, PA stenosis
turner's syndrome preductal coarctation of the aorta
marfan's syndrome aortic insufficiency
What problems are offspring of diabetic mothers at higher risk for? big babies, caudal regression syndrome, transposition of GV, clavicle fractures, E/D palsy, shoulder issues, failure to progress
monozygotic twins. One is pale w/ Hct of 15%, the other is flushed with Hct of 55%. Que paso? twin/twin transfusion syndrome
Cleft-lip = what failed embryonic process? fusion of the maxillary and medial nasal plate
What nerve innervates branchial arch 1 CN V2/V3
what innervates branchial arch 2 VII
what innervates branchial arch 3 IX
what innervates branchial arch 4 X
what structures are derived from branchial arches? cartilage and muscle
middle ear and eustachian tubes are derived from BP1
superior parathyroids are derived from BP4
inferior parathyroids are derived from BP3(dorsal)
epithelial lining of the palantine tonsil is derived from BP2
thymus is derived from BP3(ventral)
taste in ant 2/3 of tongue CNVII
taste in post 1/3 of tongue CNIX
motor of tongue CNXII
sensation in ant 2/3 of tongue CNV3
sensation in post 1/3 of tongue CNIX
abnormalities found with an arnold-chiari malformation? syringomyelia, thoracolumbar myelomenigocoele, hydrocoele
classic presenting sx of a syringomyelia cape like, bilateral l/o pain and temp sensation in upper extremities with preservation of touch sensation + weakness/atrophy of hand mm
lateral, doesn't move when swallowing branchial cleft cyst
midline, moves w/ swallowing thyroglossal duct cyst.
Created by: kayjames



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