Control of Heart Rate 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelAQA Created by: Lindsay SimmonsCreated on: 07-01-17 15:06 Transducer Cells cells that convert non-electrical signals into electrical nervous signals 1 of 10 Generator Potential de-polarisation of the membrane of a receptor cell as the result of a stimulus 2 of 10 Threshold level the energy level needed to trigger an action potential 3 of 10 Systole contracting 4 of 10 Diastole relaxing 5 of 10 Stroke Volume volume of blood in one cardiac cycle 6 of 10 Cardiac Output volume of blood leaving the heart per minute 7 of 10 Heart Beat Rate number of beats per minute 8 of 10 Positive Feedback Amplifies a change away from the normal level 9 of 10 Negative Feedback Restores level back to normal 10 of 10
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