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CardiOMG t1_itpgls6 wrote

The blood can go through more than just that blood vessel. If you have 2 vessels in parallel and one gets injured and constricts, the resistance in that vessel will increase. In that way, more blood will flow through the other vessel and less blood will flow through the injured vessel.

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scoliendo OP t1_itpgzsr wrote

So are all capillary beds fed by more than one artery/arteriole network? Or are some capillary beds only fed by one? And if the latter is the case, what happens to that capillary bed when the blood flow is reduced?

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CardiOMG t1_itpsy4p wrote

The blood flow doesn’t have to go to 0, just reduced. But also, depending on the part of the body, you don’t need constant circulation. Your legs can go 6-8 hours with no circulation and still survive.

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