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Question 1.

Which valve prevents backflow of blood from the highlighted chamber?

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Screenshot 2022-11-01 at 00.18.59.png
Question 2.

Which fibre of conducting tissue has been labelled with a black arrow?

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Screenshot 2022-11-01 at 00.27.04.png
Question 3.
Screenshot 2022-11-01 at 01.16.11.png

Which structure is shown here in this secion of the left side of the heart?

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Question 4.

Which coronary artery has been labelled?

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Screenshot 2022-11-01 at 02.23.16.png
Question 5.
Screenshot 2022-11-01 at 02.28.22.png

All areas of the conducting system are capable of acting as a pacemaker for the heart but which site depolarises spontaneously with a rate of 100bpm?

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Question 6.

Which area of the cardiac conducting pathway conducts electrical signals the most slowly?

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Screenshot 2022-11-01 at 02.28.22.png
Question 7.

Which coronary artery most commonly supplies both the AV node and the sino-atrial node, as well as the inferior aspect of the heart?

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Screenshot 2022-11-01 at 02.34.46.png
Question 8.
Screenshot 2022-11-01 at 02.38.57.png

True or false, in 80% of patients the posterior descending artery is a continuation of the left main stem artery/circumflex artery

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Question 9.
Screenshot 2022-11-01 at 02.38.57.png

Blockage of which coronary artery most frequently leads to untable arrhythmias such a complete heart block

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Question 10.
Screenshot 2022-11-01 at 02.49.41.png

Which cardiac structure prevents electrical activity from the sino-atrial node from bypassing the AV node

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Total /10
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