1. Name: _________________________________________ Section: _____________________ Date: _____________
Activity No. ________
Heart Contraction and Transport of Materials
I. Terms:
AV node SA node parts of the heart precapillary sphincter
Bundle of His Purkinje Fibers cardiac cycle systole
diastole cardiac output stroke volume law of continuity
p wave qrs complex t wave
II. Heart Contraction
Identify the parts labelled 1, 2, 3 and 4.
What will happen to the heart if 1 is destroyed?
What will happen to the heart if 2is destroyed?
What will happen to the heart if 3is destroyed?
What will happen to the heart if left bundle of 4 is destroyed?If right bundle of 4 is
destroyed?
III. What are the effects of the following factors to blood pressure? (increase, decrease, no effect)
Stroke volume- cardiac output- heart rate-
Exercise- hormones- coffee-
IV. Explain what happens in each section identified in the diagram below.