The Mind's Machine 3e Student Resources is no longer available and it was replaced by The Mind's Machine, 4e.
Chapter 9 Outline
Introduction: Harsh Reality TV
PART I Principles of Homeostasis
Homeostatic Systems Share Several Key Features
Negative feedback allows precise control
Redundancy ensures critical needs are met
Animals use behavioral compensation to adjust to environmental changes
PART II Fluid Regulation
Water Moves between Two Major Body Compartments
Two Internal Cues Trigger Thirst
Osmotic thirst occurs when the extracellular fluid becomes too salty
Hypovolemic thirst is triggered by a loss of fluid volume
We don’t stop drinking just because the throat and mouth are wet
PART III Food and Energy Regulation
Nutrient Regulation Helps Prepare for Future Needs
Insulin is essential for obtaining, storing, and using food energy
The Hypothalamus Coordinates Multiple Systems That Control Hunger
RESEARCHERS AT WORK: Lesion studies showed that the hypothalamus is crucial for appetite
Hormones from the body drive a hypothalamic appetite controller
Other systems also play a role in hunger and satiety
Obesity Is Difficult to Treat
Eating Disorders Can Be Life-Threatening
SIGNS & SYMPTOMS: Friends with Benefits