1
chapter
1
Homeostasis:
A Framework
for Human
Physiology
The Scope of Human Physiology
How Is the Body Organized?
Cells: The Basic Units of Living
Organisms
Tissues
Organs and Organ Systems
Body Fluid Compartments
Homeostasis: A Defi ning Feature of
Physiology
General Characteristics of Homeostatic
Control Systems
Feedback Systems
Resetting of Set Points
Feedforward Regulation
Components of Homeostatic Control
Systems
Refl
exes
Local Homeostatic Responses
Intercellular Chemical Messengers
Processes Related to Homeostasis
Adaptation and Acclimatization
Biological Rhythms
Balance in the Homeostasis of Chemical
Substances in the Body
t
he purpose of this
chapter is to provide an
orientation to the subject
of human physiology and the
central role of homeostasis in
the study of this science.
Maintenance of body
temperature is an
example of homeostasis.
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