Campbell Essential Biology with Physiology (6th Edition)
Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 21, Problem 17BS
Summary Introduction

To explain: The policies in the states of USA to protect high school athletes from heat illness.

Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.

Summary Introduction

To explain: The reason why heat illness is much more common in football players than athletes.

Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.

Summary Introduction

To make: Pamphlet that could be given to high school football players educating them about the dangers of heat illness and ways to prevent it.

Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.

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In this example your body is reacting to you suddenly stepping outside into 30 degree weather after being inside at 20 degrees. match the correct stage with the example of what should be happening to your body • Hot outside air temperature is felt through thermodetectors in your skin and starts to impact how cells, enzymes & body function. •Thermostat is hypothalamus activated cooling mechanisms. • skin blood vessels dilate and sweat glands are activated. •Thermostat is hypothalamus registers internal temperature decrease and is triggered to shut off cooling mechanisms. • internal body temperature remains stable at 37. Homeostasis Imbalance Body reacts Negative feedback correction
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