26. Which is the first (human)
heart chamber into which
blood enters? Where does the
blood go after passing that
chamber? What is the name of
the valve that separates the
compartments? Why is that
valve necessary?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
The venous blood comes from the
arrives in the atrium of the
. From the right the blood
goes the right ventricle. valve
that separates right ventricle from
right atrium is tricuspid valve (a
system made of leaflets).
The tricuspid is necessary to
returning of blood the right
atrium systole(contraction of
ventricles).