Transcript Document

Wallenda Model
of homeostasis
•Variable: position of body
•Setpoint: directly over the wire
•Sensors: nerve receptors
(eyes, inner ears, muscle stretch
receptors, etc.)
•Integrator: brain
•Effectors: skeletal muscles
Relative constancy near a setpoint
•Dynamic
•Energy-consuming
•Negative feedback loops
•Stability of variable is vital to survival
•Interdependence of variables (pyramid)