NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION
Bulbus cordis - CORRECT ANSWERS Smooth parts (outflow
tract) of left and right ventricles
endocardial cushions - CORRECT ANSWERS Atrial septum,
membranous interventricular septum; AV and semilunar valves
neural crest
left horn of the sinus venosus - CORRECT ANSWERS coronary
sinus
posterior, sub cardinal, and supra cardinal veins - CORRECT
ANSWERS IVC
Right common cardinal vein and right anterior cardinal vein -
CORRECT ANSWERS SVC
Right horn of sinus venosus - CORRECT ANSWERS Smooth part
of right atrium (sinus venarum)
Patent foramen ovale - CORRECT ANSWERS failure of septum
primum and septum secundum to fuse after birth
Transposition of the great vessels
,NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION
Tetralogy of Fallot
Persistent truncus arteriosus - CORRECT ANSWERS Conotruncal
abnormalities associated with failure of neural crest cells to migrate
ductus venosus - CORRECT ANSWERS connects the umbilical
vein to the inferior vena cava, bypassing the liver
becomes ligamentum venosum
phrenic nerve - CORRECT ANSWERS innervates the diaphragm
and pericardium
S3 heart sound - CORRECT ANSWERS Increased ventricular
filling pressure (e.g., mitral regurgitation, HF), common in dilated
ventricles
normal in kids and pregnant women
S4 heart sound - CORRECT ANSWERS atrial kick late diastole,
right before S1
best heard at apex in LLD position
,NBME CBSE TEST EXAM REAL EXAM 226 QUESTIONS AND
ANSWERS LATEST 2024 (usmle step 1)MEDICAL EXAMINATION
High atrial pressure.
Hypokalemia - CORRECT ANSWERS U wave present on ECG
Mg sulfate - CORRECT ANSWERS for torsades de pointe,
hypokalemia (can lengthen QT and cause torsades), and pre-
eclampsia (prevent seizures)
Romano-Ward syndrome - CORRECT ANSWERS -Congenital long
QT syndrome
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