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Name : ________________
Date: _______
Unit K : The Heart : Review #1
Heart Structure and Function :
1 Heart Identification and Functions
___ 1. Explain why the side of the heart on your left in diagrams is called the right side.
___ 2. What is meant by myocardium?
___ 3. What is the function of the Septum?
____4 . Name the four chambers in the order that blood would travel through them,
starting from the vena cavas.
___ 5. What name is given to the valves found between the atria and the ventricles?
___ 6. What is different between the right AV valves and the left AV valves?
___ 7. What structures support these valves of the heart?
___ 8. Name and describe the valves found at the junction between the ventricles and
the Aorta or Pulmonary Trunk they lead to?
___ 9. What is the difference between the Pulmonary Trunk and the Pulmonary
Arteries?
___ 10. Why are the walls of the Left Ventricle thicker than those of the Right
Ventricle?
___ 11. What is the function of the atria?
___ 12. ***What might happen to a person’s circulation if the Chordae Tendinae
attached to one of the atrioventricular valves pulled loose?***
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SA Node, AV Node, and Purkinje Fibers
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What is meant by the phrase “the heartbeat is intrinsic”?
What is the difference between systolic and diastolic?
List the phases of the cardiac cycle and the length of time required by each phase.
What causes the Lubb-Dub sound of a heart beat?
List the proper name and common name for the nodal tissue found in the upper
wall of the right atrium?
___ 6. Give the location and name for the other nodal tissue.
___ 7. What is the function of the SA node, how about the AV node?
____8. What carries the message from the AV Node to the ventricle muscle tissue?
____9. What does EKG stand for and what does and EKG show?
___10. Be able to identify the different stages of a normal EKG.