Note to recorder:
Please, may you speak slowly?
In Chapter 20, we will learn that under most conditions,
the amount of blood pumped by the heart each
minute is determined almost entirely by the rate of
blood flow into the heart from the veins, which is called
venous return. That is, each peripheral tissue of the
body controls its own local blood flow, and all the local
tissue flows combine and return by way of the veins to
the right atrium. The heart, in turn, automatically
pumps this incoming blood into the arteries, so that it
can flow around the circuit again.
