Organ Systems Physiological Changes: Cardiovascular
Figure 2: Figure Legend
Figure 2 shows the basic anatomy of the human heart and its conduction system. Here is a more detailed version of the caption that accompanies that image: Panel A shows the front view of the heart cut vertically. Panel B shows a front view of the heart cut horizontally. Panel C is a front view of the heart cut vertically to show how the signal to begin a heart beat is initiated in the sinoatrial node and conducted to the rest of the heart by the atrioventricular node and bundle, the bundle branches, and the purkinje fibers. Panel D is an electrocardiogram showing how electrical events in the cardiac conduction system relate to P, QRS, and T waves.
MARVIN O. BOLUYT EDWARD G. LAKATTA
See also EXCERCISE; HEART DISEASE; HIGH BLOOD PRESSURE.
BIBLIOGRAPHY
FITZGERALD, M. D.; TANAKA, H.; TRAN, Z. V.; and SEALS, D. R. "Age-Related Declines in Maximal Aerobic Capacity in Regularly Exercising vs. Sedentary Women: A Meta-Analysis." Journal of Applied Physiology 83, no. 1 (1997): 160–165.
FLEG, J. L.; O'CONNOR, F. C.; GERSTENBLITH, G.; BECKER, L. C.; CLULOW, J.; SCHULMAN, S. P.; and LAKATTA, E. G. "Impact of Age on the Cardiovascular Response to Dynamic Upright Exercise in Healthy Men and Women." Journal of Applied Physiology 78 (1995): 890–900.
HEATH, G. W.; HAGBERG, J. M.; EHSANI, A. A.; and HOLLOSZY, J. O. "A Physiological Comparison of Young and Older Endurance Athletes." Journal Applied Physiology 51 (1981): 634–640.
KANNEL, W. B., and BELANGER, A. J. "Epidemiology of Heart Failure." American Heart Journal 121 (1991): 951–957.
LAKATTA, E. G. "Cardiovascular Regulatory Mechanisms in Advanced Age." Physiological Reviews 73 (1993): 413–467.
POLLOCK, M. L.; MENGELKOCH, L. J.; GRAVES, J. E.; LOWENTHAL, D. T.; LIMACHER, M. C.; FOSTER, C.; and WILMORE, J. H. "Twenty-year Follow-Up of Aerobic Power and Body Composition of Older Track Athletes." Journal Applied Physiology 82 (1997):1508–1516.
SCHULMAN, S. P. et al. "Continuum of Cardiovascular Performance Across a Broad Range of Fitness Levels in Healthy Older Men." Circulation Research 94 (1996): 359–367.
TANAKA, H.; DESOUZA, C. A.; JONES, P. P.; STEVENSON, E. T.; DAVY, K. P.; and SEALS, D. R. "Greater Rate of Decline in Maximal Aerobic Capacity with Age in Physically Active vs. Sedentary Healthy Women." Journal of Applied Physiology 83 (1997): 1947–1953.
TRAPPE, S. W.; COSTILL, D. L.; VUKOWICH, M. D.; JONES, J.; and MALHAM, T. "Aging Among Elite Distance Runners: A 22-Year Longitudinal Study." Journal of Applied Physiology 80 (1996): 285–290.
WHITE, M.; RODEN, R.; MINOBE, W.; KHAN, M. F.; LARRABEE, P.; WOLLMERING, M.; PORT, J. D.; ANDERSON, F.; CAMPBELL, D.; and FELDMAN, A. M. "Age-related Changes in β-Adrenergic Neuroeffector Systems in the Human Heart." Circulation 90 (1994): 1225–1238.
Additional topics
- Organ Systems Physiological Changes: Cardiovascular - Effects Of Regular Exercise
- Other Free Encyclopedias
Medicine EncyclopediaAging Healthy - Part 3Organ Systems Physiological Changes: Cardiovascular - Heart Structure And Function At Rest, Reserve Capacity Of The Heart, Vascular Structure And Function At Rest