We humans have somewhat sealed loop of blood circulating around, so how are we able to alter the blood pressure without “opening” a valve somewhere or something like that to let blood out/in(imagine a pipe with a valve)? Where does the pressure come and go to?
In: Biology
Your blood vessels are not static pipes, they are living, moving, muscular tissue themselves that expand or contract based on the situation. The blood pressure raises and lowers when those vessels change sizes, or when your heart pumps harder/less hard.
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