1. Which of the following represents a group of autorhythmic cells (the little "energizer-bunnies" of the heart)?
ductus arteriosus
purkinje fibers
B cells

2. Prolonged elevation of blood pressure typically measuring greater than 140/90 is called...
heart block
myocardial infarction
hypertension

3. Ischemia to the heart muscle...
causes portions of the myocardium to die
may be offset by the presence of collateral vessels
both of these

4. The cardioaccelerator and cardioinhibitor center is located in the:
midbrain
pons
medulla

5. A "hole in the heart" is caused by an incompletly closed:
ductus arteriosus
foramen ovale
interventricular septum

Score =
Correct answers:

Last Updated 05/26/06