L.O:
1) To describe how glucose levels are regulated
2) To explain the second-messenger model
Starter: From BIOL1, what does ‘lysis’ mean?
Think, what does ‘neo’ mean? And ‘genesis’?
Secretion of hormones (endocrine
function)




Hormones are
secreted from the
cells in the islets of
Langerhans
α cells manufacture
and secrete the
hormone glucagon
βcells manufacture and
secrete the hormone
insulin
These are released
directly into the blood
Control of blood glucose



Is a negative feedback process
The normal blood glucose level is 90mg per
100ml of blood
If the blood glucose levels get too high or
too low, then the changes are detected by
the α and βcells in the islets of Langerhans
Activities
Complete
flowchart of
glucoregulation
Add new
keywords to
glossary
Extension: Can
you link why
glucoregulation
needs to happen
with osmosis?
Help: Use GCSE
prompt sheet to
recap
fundamental
basics
Apply
knowledge
to past exam
question
Second Messenger Model
In the activity I was… and what happened was…
Key phrases to use: (extension words in blue)
Specific receptor, glycogenolysis, adrenaline,
cAMP, activates enzymes, cell membrane of
liver, messenger 1, messenger 2, ATP, glucose,
glycogen