Difference between revisions of "CARDIAC ELECTRICAL ACTIVITY-CONDUCTION SPEEDS"
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==Reference(s)== | ==Reference(s)== | ||
Barrett, K.E., Barman, S.M | Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education | ||
[[Category:Cardiac Electrical Activity]] | [[Category:Cardiac Electrical Activity]] | ||
[[Category:Physiology]] | [[Category:Physiology]] |
Latest revision as of 02:30, 21 March 2023
SUMMARY
1. SA node: 0.05 m/s
2. Atrial internodal pathways: 1 m/s
3. AV node: 0.05 m/s
4. Bundle of His: 1 m/s
5. Purkinje fibres: 4 m/s
6. Ventricular muscle: 1 m/s
Note: conduction speed is different frompacemaker potential. Various parts of the conduction system & myocardium are capable of spontaneous rhythmical discharge but the SA node discharges most rapidly, hence is the cardiac pacemaker.
Reference(s)
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education