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Homeostasis: Positive and Negative Feedback - Coggle Diagram
Homeostasis: Positive and Negative Feedback
Negative Feedback
Stimulus
disrupts homeostasis in a:
Controlled Condition
that is monitored by:
receptors
that send an input to:
Control centre
that receives an input and provides output to
Effectors
which bring about a change or:
Response
that alters the controlled condition
Response brings a return to homeostasis
Positive Feedback
Stimulus disrupts homeostasis
Controlled Condition
that is monitored by:
receptors
that send an input to:
Control centre
that receives an input and provides output to
Effectors
which bring about a change or:
Response
that alters the controlled condition
Divergence from original steady state
Homeostasis Definition
Homeostasis is the physiological constancy
of the body despite external fluctuations.
homeostasis, any self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.
Types of receptors
Mechanoreceptors
Stimuli
Mechanical stress
Pressure Changes (baroreceptors)
Sound waves
Gravity
Location
Skin
Blood vessels
Ears
Chemoreceptors
Stimuli
Specific chemicals
Total solute concentrations
Blood PH (CO2 levels)
Prostaglandins (nocireceptors)
Location
Tounge
Blood
Nose
Tissue
Thermoreceptors
Stimuli
Heat
Cold
Certain food Chemicals (capsaisin
Location
Skin (external stimuli)
Hypothalamus (internal)
photoreceptors
Stimuli
Light
Location
Eyes (rod and cone cells)
References
R Kidd
Biozone
https://drive.google.com/file/d/10X-BAf_UAy5i9ryAzy5iNj1t-4vnLJgB/view
Britannica