How does blood reach literally every cell in the body? There can’t be capillaries between every single cell when capillaries are also made of cells…. can there?

Question

How does this work?

In: 4868

Answer 1

Blood doesn’t need to reach every cell in the body.

The vessels are just the roads to get you near where you need to be with important substances in them. The blood can introduce whatever material to a certain area and each of those areas may have its own mechanism of delivering those substances where they need to go.

As cars on the road trying to arrive at a destination- some need to take a bridge still,some a ferry, some air transported, some need a RFID to get thru certain gates, some can only fit on certain roads etc. Same with blood and their mechanisms to deliver important cells and whatnot.