What is the functional difference between veins and arteries?
The heart beat consists of two sounds, “Lub Dub”
What event is responsible for making the “Lub” sound?
What event is responsible for making the “Dub” sound?
What role does the autonomic nervous system play in heart rate?
What event does the P wave measure?
When the SA node transmits a signal, which three structures are
directly affected?
Superficially to deep, identify the three layers of the heart.
10
What two structures prevent the AV valves from opening into the
atria?
What are the two structural differences between veins and
arteries?
What are small arteries called?
Gas exchange occurs in what type of blood vessels?
What are small veins called?
20
Which part of an EKG wave represents the pathway that begins
with the AV node and ends with ventricular contraction?
What valve separates the pulmonary trunk from the right
ventricle?
What is the next structure in this sequence?
Lungs Left Atrium
What is the name of the cardiac/nervous tissue causes the
ventricles to contract?
25