Prolonged exposure to heat

Abstract The following sections are included: Introduction Integrative Acclimatory Responses of the Thermoregulatory Effectors in Homeotherms Global acclimation response Global adaptation of the evaporative cooling system Adaptation of the cardiovascular system Peripheral blood flow Chronotropic response of the heart and the regulation of stroke volume Body Fluid Compartments in the Acclimated State Plasma volume expansion Compartmentalization of body fluids - rerouting of evaporative water during heat stress and thermal dehydration Energy Metabolism Cellular Mechanisms of Acclimation Thyroid hormones level and cellular work efficiency Changes in signal transduction pathways Cholinergic muscarinic pathway for water secretion Adrenergic responsiveness and nitric oxide Cellular changes in central structures Expanded optimal temperature margins via increased stock HSP level The Dynamics of Heat Acclimation: A Biphasic Model of Central-Peripheral Cross Talk Loss of Acclimation and Its Re-Induction Problems Concerned with Human Acclimation to Heat Comparative Aspects of Heat Acclimation/Acclimatization Summary Suggested Readings Self-evaluation questions