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Quiz by jimmy_sheehan318, created more than 1 year ago

Demo test of questions for heart

	Created by jimmy_sheehan318 over 8 years ago

Heart Anatomy

Question 1 of 5

Which valves are most commonly affected by infective endocarditis?

Select one of the following:

Aortic and Mitral Valves
Aortic and Tricuspid Valves
Tricuspid and Mitral Valves

Explanation

Question 2 of 5

What is the name of the muscle found in the atrium

Select one of the following:

Pectinate
Trabeculae carnae

Explanation

Question 3 of 5

Fill the blank spaces to complete the text.

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.

Explanation

Question 4 of 5

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?

Select one or more of the following:

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

Explanation

Question 5 of 5

Select from the dropdown lists to complete the text.

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 ).