1. The thickening and shortening of the heart muscle occurs
during------------------------------.

2. The relaxation of the heart is said to be in the
------------------------------ phase.

3. The sinoatrial node is located in the ------------------------------.

4. Heart sounds are caused by
------------------------------.

5. The normal rate and rhythm of the heart is referred to as
------------------------------.

6. Small, hair-thin blood vessels between the ends of
arteries and beginning of veins are called ------------------.

7. A combining form which means” vein “is
------------------------------.

8. A combining form which means “vessel “, but not always
blood vessel is ------------------------------.

9. ------------------------ is a blood vessel leading away
from the heart.

10. -----------------------is abnormal sound heart while
listening with a stethoscope over a partially obstructed vessel.

:

1. ------ inferior vena cava                                   A. main
artery of the body

2. ------superior vena cava                                  B. valve
leading from the left ventricle

3. ------pulmonary artery                                     C. returns
blood from the left lung

4. ------right pulmonary vein                                D. vessel
carrying blood to the lungs

5. ------left pulmonary vein                                  E. valve
leading from the right ventricle

6. ------ aorta                                                     F.
valve on the right side of the heart between the atrium and ventricle

7. ------tricuspid valve                                         G.
drains blood from the lower body

8. ------pulmonary valve                                      H. valve
on the left side of the heart between the atrium and ventricle

9. ------ aortic valve                                            I. drains blood from the upper body

10. ------ mitral valve                                          j.
returns blood from the right lung