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Chapter 21, Problem 10SA
Summary Introduction

To review:

Two ways in which heat exchange occurs between the body and the external environment.

Introduction:

Heat can be transferred from the body to the environment, or from the environment to the body.

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Thermoregulation is the process by which animals maintain an internal temperature within a tolerable range. Which of the following statement is NOT TRUE about Thermoregulation ? Lütfen birini seçin: O a. Endothermic animals generate heat by metabolism O b. Ectothermic animals gain heat from external sources O c. In general, ectotherms tolerate greater variation in internal temperature, while endotherms are active at a greater range of external temperatures O d. Ectothermy is more energetically expensive than endothermy
Figure (2) below, shows the relations between all factors that should be at minimat amount of body regulation to achieve thermal equilibrium, towards establishing the physiological basis of comfort. in the same Figure, symbol (B) represents: Celius 20 25 700 600 130 300 100 100 00 70 AMBIENT TEMPERATUREF 100 110 Figure (2) ORadiation O Convection OMetabolism Evaporation STUK BOOYLOSssor GAIN
*our body is tightly regulated to maintain an internal (core) temperature of 98.6 degrees F. Your body does not function properly if you get too hot or too cold, partially because protein enzymes get too "stiff" (cold temperatures) or denatured (hot temperatures). If blood temperature rises too high, this is sensed by specialized neurons in the brain. They signal other herve centers, which in turn send signals toʻthe blood vessels of the skin. As these blood vessels dilate, more blood flows close to the body surface and excess heat radiates from the body. If this is not enough to cool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has a strong cooling effect, as we feel when we are sweaty and stand in front of a fan. In this example, the brain is a(n): а. гесеptor b. control center nent C. effector eweet alands, are a(n):
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