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01_08 Homeostatic mechanism regulates body temperature
Slide number: 1
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Control centerThe brain detects thedeviation from the setpoint and signals effectororgans.
ReceptorsThermoreceptors sendsignals to the control center.
EffectorsSkin blood vessels dilateand sweat glands secrete.
StimulusBody temperature rises above normal.
ResponseBody heat is lost to surroundings,temperature drops toward normal.
too high
too low
Normal bodyTemperature37oC (98.6oF)
StimulusBody temperature drops below normal.
ResponseBody heat is conserved,temperature rises toward normal.
ReceptorsThermoreceptors sendsignals to the control center.
EffectorsSkin blood vessels constrict andsweat glands remain inactive.
Effectorsgenerates body heat.
Control centerThe brain detects thedeviation from the set pointand signals effector organs.
If body temperaturecontinues to drop, controlcenter signals muscles tocontract involuntarily.
01_08 Homeostatic mechanism regulates body temperature
Slide number: 2
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature rises above normal.
too high
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 3
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
ReceptorsThermoreceptors sendsignals to the control center.
StimulusBody temperature rises above normal.
too high
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 4
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Control centerThe brain detects thedeviation from the setpoint and signals effectororgans.
ReceptorsThermoreceptors sendsignals to the control center.
StimulusBody temperature rises above normal.
too high
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 5
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Control centerThe brain detects thedeviation from the setpoint and signals effectororgans.
ReceptorsThermoreceptors sendsignals to the control center.
EffectorsSkin blood vessels dilateand sweat glands secrete.
StimulusBody temperature rises above normal.
too high
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 6
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Control centerThe brain detects thedeviation from the setpoint and signals effectororgans.
ReceptorsThermoreceptors sendsignals to the control center.
EffectorsSkin blood vessels dilateand sweat glands secrete.
StimulusBody temperature rises above normal.
ResponseBody heat is lost to surroundings,temperature drops toward normal.
too high
Normal bodyTemperature37oC (98.6oF)
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 7
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
ReceptorsThermoreceptors sendsignals to the control center.
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 8
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
ReceptorsThermoreceptors sendsignals to the control center.
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 9
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
Control centerThe brain detects thedeviation from the set pointand signals effector organs.
ReceptorsThermoreceptors sendsignals to the control center.
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 10
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
Control centerThe brain detects thedeviation from the set pointand signals effector organs. If body temperature
continues to drop, controlcenter signals muscles tocontract involuntarily.
EffectorsSkin blood vessels constrict andsweat glands remain inactive.
ReceptorsThermoreceptors sendsignals to the control center.
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 11
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
EffectorsMuscle activitygenerates body heat.
Control centerThe brain detects thedeviation from the set pointand signals effector organs. If body temperature
continues to drop, controlcenter signals muscles tocontract involuntarily.
EffectorsSkin blood vessels constrict andsweat glands remain inactive.
ReceptorsThermoreceptors sendsignals to the control center.
too low
Normal bodyTemperature37oC (98.6oF)
01_08 Homeostatic mechanism regulates body temperature
Slide number: 12
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
StimulusBody temperature drops below normal.
ResponseBody heat is conserved,temperature rises toward normal.
EffectorsMuscle activitygenerates body heat.
Control centerThe brain detects thedeviation from the set pointand signals effector organs. If body temperature
continues to drop, controlcenter signals muscles tocontract involuntarily.
