Please enable JavaScript.
Coggle requires JavaScript to display documents.
Positive and Negative Feedback, Positive Feedback, Negative Feedback -…
Positive and Negative Feedback
Heart beat
Chemreceptors in carotid body
Controlled by cardiovascular centre in medulla oblongate
Baroreceptors in the vena cava & aorta
Thermoregulation
Thermoreceptors
Hypothalamus
Blood water potential
Hypothalamus acts as a coordinator
Fall in water potential (ie more negative) causes release of ADH from pituitary
Osmoreceptors in hypothalamus
Blood glucose
Pancreas acts coordinator
Receptors in pancreas
Breathing
Control of breathing rate
Control of breathing cycle
Population Stability
Maintain population size
Predator/Prey relationships
Important role in homeostasis
Role of receptors
Corrective response coordinated by a control centre
Detection of change within internal environment
Role of effectors
Metabolic pathways
Prevent buildup of product
Self-regulating
End products often act as non-competitive inhibitors of rate-limiting enzymes
Principal
Response is in the opposite direction to the change
Departure from a norm value initiates physiological changes that restore the system to the norm.
Amplification
Ripening of fruit
Child birth
Positive Feedback
Negative Feedback