embryology Flashcards by millie youds | Brainscape

Q

when does formation of the heart begin

A

3 weeks

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Q

when is the first heartbeat heard

A

4 weeks

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Q

what germ layer does the heart develop from

A

mesoderm

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Q

regions of the heart tube

A

sinus venosus
primitive atrium
primitive ventricle
bulbus cordis
truncus arteriosus

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Q

what does the primitive atrium become

A

RA, ant wall of LA, right and left auricles

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