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Homeostasis, refrences, Feedback loops - Coggle Diagram

- - - - Hypothalamus sends a signal to the pancrease causing the beta cells within the panceas to release insulin into the blood.
        
        Liver turns excess glucose into glucagon, and stores it for hypoglycemia
        
        Body cells increase glucose uptake to reduce the amount of glucose within the blod.
        
        As blood glucose levels return to normal the signal to release insulin stops
        
        Normal blood glucose levels
  - - - Hypothalamus detects lowered blood glucose levels and sends a signal to the pancreas causing alpha cells within the pancreas to release glucagon
        
        Glucagon is released into the blood
        
        Liver breaks down glucagon into glucose
        
        Blood glucose return to a normal level and the signal to release glucagon to from the pancreases stops.
        
        Normal blood glucose levels
- - - - The nerve signal is detected by the hypothalamus and several responses are made in order to warm up the body
        
        Sweat glands close, this stops evaporation on the skin and avoids getting wet which allows the body hair to make a barrier betterBio
        
        Increased body temperature
        
        blood vessels constrict due to the norepinephrine released from the adrenal gland and these cause the muscles in the vessel to constrict (vasoconstriction) Reducing the blood flow to the extremeties.
        
        Hair Erector muscles raise the hair glands which traps air against the skin, forming a small insulation barrier.
        
        skeletal muscles rapidly contract, this rapid movement releases heat as a by-product
  - - - The Nerve signal is detected the hypothalamus and a coordinated response is made
        
        Muscles reduce movement
        
        As heat is released as a by-product of muscle movement. reducing movement allows for less heat production by the body
        
        Reduced body temperature
        
        Sweat glands release sweat upto 3 liters an hour
        
        As the water on the surface of the skin evaporates, heat is lost. also having wet skin increases the amount of heat lost to the environment as water easily looses heat to conduction and radiation
        
        arterioles increase blood flow to the surface of the skin
        
        this allows the hot blood to be cooled by being closer to the surface where heat can be lost through conduction.
- - - - ADH travels to the kidneys via the circulatory system.
        
        ADH causes increased reabsorption of water by the kidney which causes less water to be lost to urine, and back into the circulatory system.
        
        Increased urine concentraction but lowered volume
        
        Increases blood-water levels back to normal
  - - - Kidneys decrease permeability to water, increasing the amount of water that is taken out of the blood
        
        Less water is reabsrobed back into the blood
        
        increased urine volume and decreased urine concentration
        
        Decreased water levels back to normal.
- - - - Increased breathing rate to increase the rate of gas trasnfer
      - Increased heart rate to increase blood flow rate
      - vasodiliation
      - Bone marrow releases red blood cells into the blood stream which increases the total amount of oxygen that can be absorbed during gas transfer
        
        Increases blood oxygen level