L16 - Heart Electrophysiology Flashcards

1
Q

What do intercallated discs in cardiac muscle allow for?

A

The flow of electrical signals from one cell to another.

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2
Q

What provides the intercalated discs with structural integrity?

A

Desmosomes

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3
Q

What are the 3 cardiac cell types?

A
  • Nodal cells
  • Conducting cells
  • Myocytes
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4
Q

Where is heartbeat initiated?

A

At the sinoatrial node

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5
Q

Where does conduction from the SAN travel to?

A

The atria and atrioventrical node, then the artioventricular ring.

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6
Q

What distributes the signal to the ventricular muscle cells?

A

The purkinje system

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7
Q

Where is the sinoatrial node found?

A

In the posterior aspect of the atrium

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8
Q

What do pacemaker cells show?

A

Automacitity and rhythmicity

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