4.5 Hormonal control: Introduction and glucose Flashcards
Which two hormones control the level of glucose int he blood?
Insulin and glucagon
What is glucose stored as in animals?
Glycogen
How is glucose added to the blood?
Eating Carbohydrates
how is glucose removed from the blood?
Cell metabolism, which is faster during exercise
Where is excess glucose stored?
In the liver and muscles
Why do animals store glucose as glycogen?
It is insoluble and compact
Changes to blood glucose concentration are monitored and controlled by which organ?
Pancreas
What is Negative feedback?
A response that brings a condition back to its optimum level e.g. insulin release brings glucose down to optimum.
When blood glucose levels increase, which hormone is released by the pancreas?
Insulin
When blood glucose levels decrease, which hormone is released by the pancreas?
Glucagon
hint: the ‘glucose-a-gone’
What is the function of insulin?
Causes the liver and muscle cells to remove glucose from the blood and store is as glycogen.
What is the function of glucagon?
Causes the liver to convert stores glycogen back into glucose and release it into the blood
What is the name of the condition in which affects the persona ability to control blood glucose levels.
Diabetes
What are the two forms of diabetes called?
Type 1 and type 2
In which type of diabetes does the pancreas produce little or no insulin?
Type 1