The Conduction System
AV Node
AV Node
Structure 2
The Conduction System
The SA Node (The Pacemaker)
The SA Node (The Pacemaker)
Semilunar valves
The Conduction System
Purkinje fibers: The Heart's Rapid Response System
Purkinje fibers: The Heart's Rapid Response System
100
The atrioventricular delay is crucial because of this
It allows the atria to fully contract and empty blood into the ventricles before the ventricles begin contracting (Spinner0)
100
cusps are covered by this
What is endocardium? (Spinner0)
100
What is sinoatrial node?/ What is SA node?
100
The pulmonary valve prevents backflow into this
What is right ventricle? (Spinner000)
100
0.3-1.0 m/s or 0.65 m/s
What is conduction through standard ventricular muscle? (Spinner000)
200
The atrial ventricular node introduces a delay of approximately this many milliseconds
What is 110?
200
This support apparatus (_ _ _ _ _ _ _ + papillary muscles) is unique to the AV valves and keeps them stable under high pressure during ventricular contraction.
What is "chordae"?
200
The second node in the cardiac conduction system
What is AV node?/ What is atrioventricular node?
200
The aortic valve prevents backflow into this
What is left ventricle?
200
the Purkinje fibers so much faster because of this
What is high density?/ What is large diameter?
300
Situated behind and below
What is posteroinferior? (Poison IV)
300
The AV valves operate passively based on these differences (no muscles in the valves themselves)
What is pressure? (Poison IV)
300
Healthy resting adult beats per minute
What is 80 bpm? (Poison IV)
300
The shape that the semilunar valves are in
What are crescents? (Poison IV)
300
Purkinje fibers are located here
What is in the subendocardium? (Poison IV for correct pronunciation)
400
atrioventricular node, also called the node of this
What is Tawara? (Match-a-Pair)
400
The sound of the heartbeat that comes largely from the AV valves closing at the start of systole
What is "lub"? (Match-a-Pair)
400
The sinoatrial node is this long
What is .6 inches? (Match-a-Pair)
400
The semilunar valves are also called this
What are aortic valve and pulmonary valve? (Match-a-Pair for both)
400
Purkinje fibers conduct at this rate
What is 3 m/s? (Poison IV)
500
the cardiac conduction system in order
What is SA node; AV node; Bundle of His; Purkinje Fibers? (Bang-a-Rang)
500
There once was a valve growing narrow,
So blood had to squeeze through the marrow.
The heart huffed and it strained,
With a murmur complained—
Till the ticker was worn to a shadow!
What is stenosis? (Bang-a-Rang for correct pronunciation)
500
The first node to start the electrical impulses of each heartbeat
What is the SA node?/ What is Sinoatrial node? (Bang-a-Rang for Sinoatrial)
500
the "dub" sound
What is closure of semilunar valves? (Bang-a-Rang for correct pronunciation)
500
the average difference between men and women’s resting heart rate
What is 3 bpm? (Bang-a-Rang for "bpm" or "beats per minute")