In order for blood to always flow unidirectionally through a closed circulatory system, the ________. in order for blood to alwa
ys flow unidirectionally through a closed circulatory system, the ________. capillaries must have a thick endothelium pressure in all vessels must be equal arteries must be elastic blood vessels farthest from the heart must have valves
Answer: The blood vessels farthest from the heart must have valves.<span><span> Blood
flow through the body system by the action of the pumping heart and it is
usually pushed under high velocity and pressure away from the heart, toward the
main artery and the aorta. The flow of
blood through the capillary beds is usually regulated by the body needs which
is directed by the nerves and hormone signals. However, </span>for
blood to always flow unidirectionally through a closed circulatory system, the blood vessels farthest from the heart must
have valves.</span>
Yes you can. The atomic mass measured from the proteins and neutrons in an atom, since you know he number of protons, you can subtract and be left with the number of neutrons.
