Section 28-2 “Homeostasis ”. Write everything that is underlined. KEY CONCEPT Homeostasis is the regulation and maintenance of the internal environment of the body. I. Homeostasis Conditions within the body must remain within a narrow range – like your body temperature.
Write everything that is
KEY CONCEPTHomeostasis is the regulation and maintenance of the internal environment of the body
a. Homeostasis involves keeping the internal environment within set ranges
b. Control systems help maintain homeostasis.
a. Negative feedback loops are necessary for homeostasis
CO2 levels rise
O2 /CO2 level returns to normal
Control system forces exhale, inhale
b. Negative Feedback Loop Example:
white blood cell
red blood cell
c. Positive feedback increases change