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KEy question: How does the body control blood glucose levels?
KEy question: How does the body control blood glucose levels?
Task 1 - DO NOW
Task 1 - DO NOW
Whats the LINKEE?
Have a look at the 4 pictures below, how do you think they are linked together and why?
Write you ideas down on the companion sheet
Meet the Spec - What you need to know
Meet the Spec - What you need to know
Task 2 - The negative feedback loop
Task 2 - The negative feedback loop
Read the information below and spend time looking at the diagrams.
Then drag and drop on the companion sheet to put the negative feedback loop in the correct order.
There are several parts to maintaining blood glocuse level in the human body. These are listed in catagories below.
ORGANS
Pancreas
Monitors blood glucose levels
Produces and secretes insulin and glucagon
Liver
Stores glycogen
HORMONES
Insulin
Message to convert glucose into glycogen
Glucagon
Message to convert glycogen into glucose
SUBSTANCES
Glucose
Soluble form used in respiration
Glycogen
Insoluble form stored in the liver
Save some for later?
Save some for later?
If the blood glucose concentration is too high, the pancreas produces the hormone insulin that causes glucose to move from the blood into the cells. In liver and muscle cells excess glucose is converted to glycogen for storage, and will be used at a later date.
When the body has low levels of glucose in the blood the parcreas releases a hormone called Glucagon, which tells the liver to convert the glycogen back into glucose and put it back into the bloodstream.
Task 3 - Past paper
Task 3 - Past paper
Have a go at the past paper questions on the regulation of blood glucose levels.
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