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answers 2025
how many pairs of arches form in the fetus? - answer 6 pairs of arches,
only 3 remain as blood vessels
which fetal arch becomes the aorta? - answer 4th left arch
what does the ductus arteriosus become? - answer ligamentum
arteriosum
what does the ductus venosus become? - answer ligamentum venosum
what does the foramen ovale become? - answer fossa ovalis
what velocities in the left atrial appendage indicate an increased risk of
thrombus formation? - answer < 20 cm/s
what does an acute MI do to EKG? - answer ST elevation or depression
, what coronary infarct stays silent on an EKG? - answer circumflex
what is Ebstein's anomaly associated with? - answer Wolff-Parkinson-
White Syndrome
what can cause a diastolic murmur? - answer AI, PI, MS, TS, ASD
what can cause a dock murmur? - answer stenosis of the LAD
what can cause a systolic murmur? - answer AS, PS, MR, TR, VSD
what can cause a late systolic murmur? - answer MVP, TVP, papillary
dysfunction
what can cause a continuous murmur? - answer PDA
what is a pericardial rub? - answer friction from the pericardial sac from
acute pericarditis
what is a pericardial knock? - answer sound made with constrictive
pericarditis
what causes an Austin Flint murmur? - answer severe AI
what causes a Graham-Steele murmur? - answer severe PI
what causes a mid-systolic click? - answer MVP
what does acromegaly do to the heart? - answer causes LVH, increased LV
mass, and impaired relaxation