Learning Module 5:
Evaluation
Name: ________________________
Multiple Choice
1. How many chambers does the human heart have?
a) One
b) Two
c) Three
d) Four
2. Blood is pumped to the lungs by which chamber of the heart?
a) Left ventricle
b) Right ventricle
c) Both left and right ventricle
d) By the atria
3. During an action potential:
a. the membrane potential increases
b. the membrane potential stays the same
c. the membrane potential decreases
4. Primary pacemaker of the heart is the:
a) AV-node
b) Bundle of HIS
c) SA-node
d) Purkinje Fibers
Short Answer
5. List two places on your body where you can take a pulse.
6. I measured the heart rate of my wife’s 95 year old grandfather the other day. His
electrocardiogram showed QRS-complexes that were 1.2 seconds apart. What was his
heart rate?
7. During hibernation, a prairie dogs heart rate might decrease from 200 bpm down to 2
bpm. What would you expect happens to oxygen consumption during hibernation?
8. Skeletal muscle is one of the largest consumers of oxygen in our bodies. If you
measured oxygen consumption / kg, would you expect an obese person to have higher or
lower oxygen consumption / kg than a very athletic rugby player?
Fill in the Blank
9. During an ____________ ______________ a large number of positive ions
flow into the normally negatively charged cell.
10. _________________ _____________________ is defined as a large reduction in
heart rate after an individual submerges their head in cold water.
11. If I place a prairie dog in a sealed box and measure the amount of heat it produces I
would be calculating metabolic rate by ___________ _______________.
12. An _____________________________ is a recording of the electrical activity of the
heart as perceived by electrodes placed on our skin.