Quiz
Heart Anatomy
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Perguntas do quiz (5)
1Which valves are most commonly affected by infective endocarditis?
- AAortic and Mitral Valves
- BAortic and Tricuspid Valves
- CTricuspid and Mitral Valves
2What is the name of the muscle found in the atrium
- APectinate
- BTrabeculae carnae
3There are [blank_start]two[blank_end] specialised types of cardiac muscle cell. The contractile cells, composing [blank_start]99%[blank_end] of cardiac muscle cells and the auto-rhythmic cells, which initiate and conduct [blank_start]action potentials[blank_end] for contraction of working cells.
- Atwo
- B99%
- Caction potentials
4The 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?
- AClosing of Na+ channels and opening of transient calcium channels
- BOpening of transient Na+ channels and opening of transient calcium channels
5The auto-rhythmic cells of the SA node set the pace of the heart at [blank_start]70-80[blank_end] BPM, in the presence of parasympathetic tone. These cells have the fastest rhythm at controlling heart rate. The cells of the AV node are [blank_start]slower[blank_end] and set a rhythm of 40-[blank_start]60BPM[blank_end].
- A70-80
- B80-100
- C100-120
- Dslower
- Efaster
- F60BPM
- G100BPM
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- jimmy_sheehan318
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- English
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