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Paper 2 ✅
B5 - Homeostasis and Response
5.1 - Homeostasis
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matilda
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Cards (6)
Homeostasis
the regulation of conditions inside the body to maintain a stable
internal
environment
, in response to both internal and external conditions
Automatic Control Systems
Receptors
- detects change
Coordination Centres
- interpret the change and decide what needs to be done (
brain
,
spinal cord
)
Effectors
- carry out the change (
muscles
,
glands
)
To send signals between the steps of
Automatic Control Systems
, the
Nervous System
or
Endocrine System
is used.
Endocrine System
:
sends messages through bloodstream using
hormones
sends to the
entire body
slower
long lasting effects
Negative Feedback Loops
A change in environment gets detected and negative feedback uses the
Automatic Control Systems
to regulate that change.
Why does to body need to maintain optimal conditions?
For optimal
enzyme action
and cell function