Revision questions Flashcards by Caelin McDermott | Brainscape

Q

Which part of the heart initiates the heart beat?

A

Sinoatrial node

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Q

Which of the following is not apparent in an ECG?

A

Atrial repolarisation

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Q

The QRS complex of the ECG is due to what?

A

Ventricular depolarisation

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Q

What does the second heart sounds mark?

A

The end of the ejection period

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Q

True or false - the speed of a conduction of action potential over AV node is increased by noradrenaline released from the sympathetic nervous system?

A

True

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Q

Where is the greatest drop in pressure and offers the greatest resistance to flow?

A

Arterioles

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Q

True or false - the pressure gradient over the length of the venous system is much less than that which exists over the arterial system?

A

True

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