What are the four major for loss of body heat? Which of these four a most import
ID: 174584 • Letter: W
Question
What are the four major for loss of body heat? Which of these four a most important for controlling body temperature at rest? During exercise? What happens to the body temperature during exercise and why? Why is water vapor pressure in the air in important factor when one is performing in the heat? Why are wind and cloud cover important? What factors may limit the ability to continue to exercise in hot environments? What is the purpose of the wet-bulb globe temperature (WBGT)? What does it measure? Differentiate between heat cramps, heat exhaustion, and heatstroke. What physiological adaptations occur that allow a person to acclimate to exercise in the heat? How does the body minimize excessive heat loss during cold exposure? What are the three patterns of cold adaptation and when might each be expected to occur? What factors should be considered to provide maximal protection when people are exercising in the cold? In addition to the activities listed in the chapter opening outline on page 295, two other activities are available in the web study guide, located at www.HumanKinetics.com/PhysiologyOfSportAndExercise The KEY TERMS activity reviews important terms, and the end-of-chapter QUIZ tests your understanding of the material covered in the chapter.Explanation / Answer
1. The four major causes of the loss of body heat are radiation, conduction , convection and evaporation.
Radiation: Human beings are warm blooded and hence maintain a constant body temperature of about 98.6F.Generally the body temperature is higher than the surrounding environment, hence there is constant loss of body heat by various methods depending on the surrounding environment
Radiation is the direct loss of body heat to the surrounding environment. In order to prevent excess loss of body heat we need to insulate ourselves with warm clothing .
Convection:This form loss of heat by the body is not directly but is brought about by the air surrounding us.Whenever air brushes our skin it carries a bit of body heat along with it , more the speed of the air more will be the loss(remember you switch on the fan to keep you cool).
Conduction:It is one of the most effective ways of loss of body heat as the body comes in direct contact with the object that has temperature lower than that of the body and transfers heat . This is seen when the body comes in contact with a solid object like floor , water, metal objects etc.
Evaporation: Human body has a homeostatic mechanism to maintain constant body temperature.One of the major process in maintaining the body temperature is by sweating.
When we exercise or exert ourselves there is a rise in the body temperature which results in sweating. when sweat evaporates it removes heat from the body . excessive sweating is also not good for the body.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.