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Pharmacology Midterms > Antiarrhythmic > Flashcards

Antiarrhythmic Flashcards

1
Q

PACEMAKER of the heart that creates IMPULSES/CONTRACTIONS

A

SA node

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2
Q

The impulses are __________ due to the

A

Automatic
Spontaneous generation

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3
Q

It is the movement of the cell from NEGATIVE membrane potential to POSITIVE membrane potential

A

Depolarization

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4
Q

UNIQUE cells can depolarize __________

A

By themselves

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5
Q

A HIGHWAY that send depolarization signal to left atria
Is it fast or slow?

A

Bachmann’s bundle
Fast

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6
Q

The only MAJOR connection between the ATRIA and the VENTRICLE

A

Atrioventricular node

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7
Q

Does the ATRIA and VENTRICLE contract SIMULTANEOUSLY?

A

No

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8
Q

What will happen if the ATRIA and VENTRICLE contract SIMULTANEOUSLY?

A

Squeeze blood against each other

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9
Q

There is DELAY between contractions for

A

The blood to move forward

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10
Q

The signal in the Purkinje fibers move __________ and in the muscles move __________

A

Fast
Slow

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11
Q

It is the impulses generated that will trigger the heart to CONTRACT

A

Action potential

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12
Q

Which is faster Cardiac cells or pacemaker cells

A

Cardiac cells

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13
Q

In the cardiac cells who does the SQUEEZING of the heart

A

Cardiac myocytes

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14
Q

What triggers squeezing

A

Calcium

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15
Q

Little connection between cells

A

Gap junctions

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16
Q

Does SODIUM channels increase or decrease membrane potential

A

Increase

17
Q

What opened due to DEPOLARIZATION

A

Voltage gated channels

18
Q

Voltage gated channels causes

A

Repolarization

19
Q

What keeps the membrane potential in a PLATEAU

A

Calcium

20
Q

Increase in intracellular sodium will

A

Increase calcium = contraction

21
Q

In DEPOLARIZATION heart will

A

Contract

22
Q

It keeps the heart breathing in a certain RHYTHM or PHASE

A

Pacemaker cells

23
Q

It helps determine the VOLTAGE of the cell

A

Ions

24
Q

Atrial depolarization

A

P wave

25
Q

Ventricular depolarization

A

QRS complex

26
Q

Ventricular repolarization

A

T wave

27
Q

Conduction time through the AV node

A

PR interval

28
Q

Ventricular action potential

A

QT interval

29
Q

What PHASE is repolarization

A

Relax

30
Q

What PHASE is depolarization

A

Contraction

31
Q

When the ATRIA is CONTACTING the VENTRICLES are

A

Relaxed

Pharmacology Midterms (4 decks)

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