Pressure is the pressure exerted by blood on the walls of the vessels.

it is b

explanation: mark brainliest because i am trying to get to the next level and i just need 1 more

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

answer; synapse; i believe this is correct,plz check first good luck;