Difference between revisions of "CARDIAC ELECTRICAL ACTIVITY-CONDUCTION SPEEDS"

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

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 ==Reference(s)==
-Barrett, K.E., Barman, S.M., Boitano, S., Brooks, H.L., Weitz, M., Brian Patrick Kearns, Ganong, W.F. and Mcgraw-Hill Education (Firm (2016). Ganong’s review of medical physiology. 25th ed. New York: Mcgraw Hill Education.
+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
-<br/>Hall, J.E. and Hall, M.E. (2020). Guyton And Hall Textbook Of Medical Physiology. 14th ed. S.L.: Elsevier - Health Science.
-<br/>West, J.B. and Luks, A.M. (2021). West’s Pulmonary Pathophysiology. Lippincott Williams & Wilkins.
 [[Category:Cardiac Electrical Activity]]
 [[Category:Physiology]]