Physiology And Pathology Of Heart Function

Front 1

Cardiac myocytes have _ that allow for rapid relay of electrical signals between them

Back 1

Gap junctions

Front 2

Name 3 parts of electrical conduction system of heart

Back 2

SA node
AV node
His-Purkinje cells

Front 3

Normal pacemaker of the heart

Back 3

SA node

Front 4

SA node exhibits automaticity in which spontaneous _ generates rhythmic AP's

Back 4

PHASE 4 DEPOLARIZATION

Front 5

Nodal tissues are dependent on _ for their phase 0 depolarization whereas cardiac muscular tissue uses _ for phase 0 depolarization

Back 5

Ca

Na

Front 6

_ transmits AP's more slowly then other cardiac tissues

Back 6

AV node

Front 7

This feature allows atria to contract before ventricles with time for ventricles to repolarize, fill with blood and prepart to receive their next electrical signal

Back 7

Slowing down at AV node

Front 8

_ effects on the heart cause a change in heart rate by affecting the rate of depolarization of SA node

Back 8

CHRONOTROPIC

Front 9

_ effects cause change in contractility of the heart

Back 9

INOTROPIC

Front 10

Increased intracellular Ca increases inotropic or chronotropic effects

Back 10

Inotropic

Front 11

Increased preload or afterload owing to increased filling of ventricles lengthens myocytes which induces stronger contraction

Back 11

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