jimmy_sheehan318
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Demo test of questions for heart

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Heart Anatomy

Frage 1 von 5

1

Which valves are most commonly affected by infective endocarditis?

Wähle eine der folgenden:

  • Aortic and Mitral Valves

  • Aortic and Tricuspid Valves

  • Tricuspid and Mitral Valves

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Frage 2 von 5

1

What is the name of the muscle found in the atrium

Wähle eine der folgenden:

  • Pectinate

  • Trabeculae carnae

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Frage 3 von 5

1

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There are specialised types of cardiac muscle cell. The contractile cells, composing of cardiac muscle cells and the auto-rhythmic cells, which initiate and conduct for contraction of working cells.

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Frage 4 von 5

1

The SA node, is always in transient state towards hyperpolarisation. This causes activation of the funny Na+ channels allowing an influx of Na+. K+ channels close slowly allowing threshold to be reached. The next step is?

Wähle eine oder mehr der folgenden:

  • Closing of Na+ channels and opening of transient calcium channels

  • Opening of transient Na+ channels and opening of transient calcium channels

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Frage 5 von 5

1

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The auto-rhythmic cells of the SA node set the pace of the heart at ( 70-80, 80-100, 100-120 ) BPM, in the presence of parasympathetic tone. These cells have the fastest rhythm at controlling heart rate. The cells of the AV node are ( slower, faster ) and set a rhythm of 40-( 60BPM, 100BPM ).

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