Download Human Heart worksheet

Human Heart
Name __________________________
Period ________ Date _______
Label the diagram of the heart and color in both the chambers and vessels according to
whether they contain oxygenated (red) or deoxygenated (blue) blood. Then answer the
questions below.
1.A human heart contains _______ chambers. What other kinds of animals have this
number of chambers?
2.The ___________ receive blood returning to the heart and the
______________________ pump blood out of the heart.
3.Veins carry deoxygenated blood back to the heart with the EXCEPTION of the
______________________________________. Explain.
4.The major vessel carrying oxygenated blood from the heart to all parts of the body is
the ___________________________.
5.The ___________________________ carry deoxygenated blood to both lungs.
6.The ________________________ carry oxygenated blood back from the lungs
reentering the ____________________ of the heart.
7.The ________________________________ brings deoxygenated blood back from the
lower extremities and the _________________________________ brings it back from
the upper region of the body.
8.Explain the meaning of “double circulation”.
9. a.Where are the AV or ____________________________________ valves located?
b. What function do they serve?
10. a. Where are the SL or _____________________________________ valves located?
b. What function do they serve?
11.Why is the mammalian heart (such as a humans) considered more highly evolved than
that of amphibians which have __________ chambers?