Heart: Conduction System Flashcards

1
Q

T/F: the conduction system of the heart is made up of nervous tissue?

A

False: no, just no

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2
Q

Which part of the conduction system is the natural pacemaker of the heart?

A

Sinuatrial Node

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3
Q

What is the general location of the sinuatrial node?

A

The upper end of the crista terminalis, near the junction of the right atrium and the superior vena cava

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4
Q

What is the general location of the atrioventricular node?

A

Within the septal wall

-above the opening for the coronary sinus in the right atrium

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5
Q

Teh atrioventricular bundle is divided into what?

A

1) Right Bundle Branch

2) Left Bundle Branch

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6
Q

What part of the conduction system of the heart enters the septomargial trabecula of the right ventricle?

A

Right Bundle Branch

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7
Q

With part of the atrioventricular bundle enters the paillary muscle of the left ventricles?

A

Left Bundle Branch

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8
Q

Where does the conduction system of teh heart begin?

A

With the sinuatrial node (SA Node)

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9
Q

After beginning with the SA node, the conduction system impulse travels where?

A

through the atrial wall until it reaches the atrioventricular node (AV node)

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10
Q

After eh AV node, the impulse travels where?

A

Through the atrioventicula bundle an its two branches to the subenocardial plexus of the conduction cells.

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11
Q

What if the terminal part of the conduction system?

A

Myocardium of the ventricles

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