2352906
Description
Mind Map by Lilac Potato, updated more than 1 year ago
|
|
Created by Lilac Potato
over 9 years ago
|
|
GCSE AQA Biology 1 Homeostasis
- Definition: The maintenance of a constant internal environment
- These things must be controlled...
- Ion content
- Water content
- Body temperature
- Blood sugar level
- Ion content
- Ion content
- Ions taken into body in
food & absorbed into blood
- If food contains too much -
excess ions need to be removed
- Some ions lost in sweat
- Kidneys remove excess from blood - got rid of in urine
- Ions taken into body in
food & absorbed into blood
- Water content
- Taken into the body as food & drink
- Lost in these ways...
- Through the skin as sweat
- Via the lungs in breath
- Via the kidneys in urine
- Through the skin as sweat
- Balance between sweat
& urine can vary...
- On cold day/when you're not been exercising, don't sweat
much, produce more urine which will be pale (diluted)
- On hot day/when you're exercising, sweat a lot, produce
less urine which will be darker(more concentrated)
- Will lose more water through breath
- Will lose more water through breath
- On cold day/when you're not been exercising, don't sweat
much, produce more urine which will be pale (diluted)
- Taken into the body as food & drink
- Body temperature
- In human body enzymes
work best at 37 degrees C
- Part of the brain is sensitive to blood
temp. in the brain & receives
messages from skin about skin temp.
- In human body enzymes
work best at 37 degrees C
- Blood sugar level
- Eating food containing carbs
put glucose into blood from gut
- Normal metabolism of cells removes glucose from
blood, if you do vigorous exercise more is removed
- Hormone (insulin) helps maintain right
level so cells get constant supply of energy
- Eating food containing carbs
put glucose into blood from gut
Want to create your own Mind Maps for free with GoConqr? Learn more.