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Homeostasis Negative and positive feedback, Types of Receptors - Coggle…
Homeostasis Negative and positive feedback
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Constrast
Negative feedback mechanisms detect departures from a set point norm and act to restore the steady state.
Homeostatic control systems have three functional components
Receptor
(sensor)= to detect change
Type 3:
Mechanoreceptor
Mechanical stress
Pressure changes(baroreceptors)
Sound waves
Gravity
Type 4:
Chemoreceptor
Specific chemicals
Total solute concentrations(osmoreceptors)
Blood pH (CO2 levles)
Prostaglandins (nocireceptors)
Type 2:
Thermoreceptor
Heat
Cold
Certain food chemicals (eg. capsaicin)
Type 1:
Photoreceptor
Light (visible wavelengths)
Stimuli
(a control centre)
Effector
= to produce an appropriate response
Types of Receptors