<Table> <Tr> <Th_colspan="2"> Coronary circulation </Th> </Tr> <Tr> <Td_colspan="2"> Coronary arteries labeled in red text and other landmarks in blue text . </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Th> MeSH </Th> <Td> D003326 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Coronary circulation </Th> </Tr>

When do coronary arteries primarily receive blood flow