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Transcript
Rise in blood glucose
levels
Fall in blood glucose
levels
Detected by α cells in
the islets of Langerhans
in the pancreas
This raises the glucose
concentration in the
blood
Glucagon binds to
specific target cells /
receptors on the liver
cell membranes
Detected by β cells in
the islets of Langerhans
in the pancreas
Also, glucagon promotes
the formation of new
glucose
(gluconeogenesis) from
fatty acids and amino
acids
α cells release glucagon
which travels in the
blood
Rise in blood glucose
levels
Fall in blood glucose
levels
Detected by α cells in
the islets of Langerhans
in the pancreas
Glucagon binds to
specific target cells /
receptors on the liver
cell membranes
Detected by β cells in
the islets of Langerhans
in the pancreas
Also, glucagon promotes
the formation of new
glucose
(gluconeogenesis) from
fatty acids and amino
acids
α cells release glucagon
which travels in the
blood
This lowers the glucose
concentration in the
blood
The membrane of liver
and muscle cells
become more
permeable to glucose,
so glucose is absorbed
This lowers the glucose
concentration in the
blood
The membrane of liver
and muscle cells
become more
permeable to glucose,
so glucose is absorbed
This raises the glucose
concentration in the
blood
β cells release insulin
which travels in the
blood
An enzyme converts
glycogen to glucose
(glycogenolysis)
Also, an enzyme
converts glucose to
glycogen (glycogenesis)
Insulin binds to specific
target cells / receptors
on the liver and muscle
cell membranes
β cells release insulin
which travels in the
blood
An enzyme converts
glycogen to glucose
(glycogenolysis)
Also, an enzyme
converts glucose to
glycogen (glycogenesis)
Insulin binds to specific
target cells / receptors
on the liver and muscle
cell membranes