160 particles at t=100 160 particles at t=200 Pumping blood in one direction is the main function of the heart, and the heart is equipped with valves that ensure unidirectional flow.
(160 particles at t=100 160 particles at t=200 Pumping blood in one direction; is; the main function of the heart, and the heart is equipped with valves) (the heart; is equipped; with valves) (valves; ensure; unidirectional flow)
160 particles at t=100 160 particles at t=200 Pumping blood in one direction the heart valves
is is equipped ensure
the main function of the heart, and the heart is equipped with valves
with valves
unidirectional flow