The ability to create an impulse without nerve stimulation The ability to respon

Question

The ability to create an impulse without nerve stimulation The ability to respond to an outside stimulus The ability to transmit the electrical impulse to another adjacent cell The ability to shorten in response to a stimulus The electrolyte of depolarization The electrolyte of repolarization The electrolyte of contraction The normal pacemaker of the heart The structure that delays conduction of the impulse to the ventricles Why? The percentage of volume of blood ejected from the heart each beat What does it tell you? Chamber thickness is related to ______ Stenosis Draw ischemic cascade and EKG changes expected with each stage

Explanation / Answer

1. Automaticity: ability to create an impulse without nerve

stimulation.

2. Sensitivity: ability to respond to an outside stimulus.

3. Conductivity: ability to transmit the electrical impulse to

another adjacent cell.

4. Contractility: the ability to shorten in response to a stimulus.

5. Electrolyte of Depolarization for myocardial cells is sodium and electrolyte of depolarization for pacaker cell is calcium.

6. Electrolyte of repolarization is potassium.

7. Electrolyte of contraction: calcium, sodium and potassium.

8. Sinoatrial node: normal pacemaker of heart.

9. Atrioventricular node: delays conduction of impulse to the ventricles to allow atrium to contract and emtying blood into the ventricles before contraction of ventricles.

10. Stroke volume, 70ml.

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