Homeostasis

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  • Created by: amyclaire
  • Created on: 31-03-16 19:40
Reasons why CO2 conc may change
Activity level (respiration increases)
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Reasons why urea conc may change
Eating lots of protein, excessive exercise, dehydration
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Reasons why water conc may change
Drinking too much/little, exercise causes sweating, increased body temperature
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Reasons why ion (salt) conc may change
Eating lots of salty foods, sweating lots
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Reasons why core body temp may change
Intense exercise, external temperature, fever
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Reasons why blood sugar conc may change
Eating a meal, eating sugary foods, exercise, not eating, stress
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Effects if CO2 conc not controlled
pH lower, enzymes affected (activity reduced), blood more acidic
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Effects if urea conc not controlled
It is toxic, if enough builds up it is fatal, cells stop working properly
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Effects if water conc not controlled
Cells swell, brain swells, seizures, dehydration, cramps, death, more urine
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Effects if ion (salt) conc not controlled
High blood pressure, more urine, coma, muscle contraction reduced
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Effects if core body temp not controlled
Tiredness, clumsiness, confusion, heat stroke, nausea, seizures, coma, enzymes denature
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Effects if blood sugar conc not controlled
Coma as body breaks down fat, dehydration, kidney damage, eyes, nerves, blood vessels, cells don't work properly
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How CO2 conc is controlled
Breathing rate and depth change, level detected in medulla
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How urea conc is controlled
Urine, urea leaves through urine, bladder, produced in liver, transported to kidney
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How water conc is controlled
Water loss from lungs, exhalation, the skin, swear, urine, kidneys, out of blood
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How ion (salt) conc is controlled
Loss of ions through sweat and urine in blood
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How core body temp is controlled
Hairs up/ down, sweating, shivering, widening of blood vessels, hypothalamus
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How blood sugar conc is controlled
Insulin, secreted from pancreas into blood, can convert glucose into glycogen if too high
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Other cards in this set

Card 2

Front

Reasons why urea conc may change

Back

Eating lots of protein, excessive exercise, dehydration

Card 3

Front

Reasons why water conc may change

Back

Preview of the front of card 3

Card 4

Front

Reasons why ion (salt) conc may change

Back

Preview of the front of card 4

Card 5

Front

Reasons why core body temp may change

Back

Preview of the front of card 5
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