Cardiac cycle

2. during this period the ventricles are relaxing
4. (diagram) looks at the pressure and volumes at the left/right ventricle, aortic pressure during the cardiac cycle
5. when conduction of the AV node is slowed to allow ventricular filling
6. effect on heart rate due to increased sympathetic stimulation (or decrease in vagal tone)
8. fibres that radiate through the walls of the ventricles
11. during this period the ventricles are contracting
12. refers to influences on the strength of contraction
13. formed by hemi channels (a gap junctions) at intercalated disks, allow faster conduction between cardiac cells
16. (two words without space) the point at which the aortic valve closes and gives a bump in the aortic pressure
17. method of measuring the difference in potential from the top of the heart to the base

1. refers to the rate of relaxation of heart
3. (conduction)allows electrical impulse to travel easier along fibres rather than across
7. neurotransmitter that decreases chronotropy
9. effect on heart rate due to increases parasympathetic stimulation
10. refers to influences on the heart rate
14. type of SAN cell at the centre node
15. neurotransmitter that increases chronotropy