kingvonn2261 kingvonn2261
  • 11-11-2021
  • Biology
contestada

the heart of an embryo starts to pump blood by the ________.

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chepgill24
chepgill24 chepgill24
  • 11-11-2021

Answer:

fourth week of pregnancy

Explanation:

Mark me brainly please

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kimberly198116
kimberly198116 kimberly198116
  • 11-11-2021
Emerging from the placenta is the umbilical vein, which carries oxygen-rich blood from the mother to the fetal inferior vena cava via the ductus venosus to the heart that pumps it into fetal circulation.
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¿quienes comian la paella?