Conduction System of The Heart Flashcards

1
Q

What is the original pacemaker of the heart?

A

Sinoatrial node (sa node).

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2
Q

What initiates the heartbeat?

A

Sinoatrial node (sa node).

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3
Q

What is a normal heart rate?

A

60 to 100 BPM

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4
Q

What node acts as a backup pacemaker?

A

Atrioventricular node (av node).

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5
Q

How many beats per minute is the Atrioventicular node?

A

40 to 60 BPM

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6
Q

What is the last pacemaker site?

A

Purkinje fibers.

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7
Q

How many beats per minute is the purkinje fibers?

A

20 to 40 BPM

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8
Q

What are the 3 sites for pacemakers?

A
  1. Sinoatrial node (sa node)
  2. Atriolventricular node (av node)
  3. Purkinje fibers
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