Homeostatis Flashcards
what is homeostatis?
the maintenance of static internal environment in the body despite changes in the extrenal environment
what factors does the body need to keep constant?
(one about plants)
(guard cells close when a plant loses water)
removal of waste products (e.g. CO2 and urea)
blood pH level
body temprature control - 370C
blood - water content/blood concentration
blood pressure
blood sugar
blood ion level
label this diagram to show why temprature control is important
what does hyperglycemia mean?
too much glucose in the blood
what does hypoglycemia mean?
too little glucose in the blood
what influences blood glucose levels to rise?
glucose in food and drink absorbed into blood
what influences blood glucose levels to drop?
glucose moves into cells from blood and is used in respiration
why is it important to keep blood glucose levels constant?
(talk about hyperglycemia and hypoglycemia)
hyperglycemia –> osmosis from cells to blood - cells shrink
hypoglycemia –> you can faint
complete this blood glucose regulation diagram for when you eat a bar of chocolate
Complete this blood glucose regulation flow diagram : when you eat a bar of chocolate
complete this blood glucose regulation diagram for when you run all the way to school
what are α and β cells?
α = alpha
β = beta
Complete this blood glucose regulation flow diagram : when you run all the way to school
what is the difference between glucose, glycogen and glucogan?
glucose = sugar
glycogen = polysaccharide
glucogan = hormone
tip to remember: when glucose is gone it releases glucagon
what is diabetes?
occurs either when the pancreas does not produce enough insulin or when the body cannot effectively use the insulin it produces
what are the symptoms of diabetes (basic)
frequent urination
thirst
dehydration
Type 1 diabetes is an autoimmune disease. What does autoimmune mean?
your immune system attacks your own cells (in this case β cells)
how can diabetes be diagnosed/ tested?
a test for type 1 and 2 is urine –> you should have no glucose
you can also test your blood sugar levels
how can type 1 diabetes be treated? (basic)
insulin inections
how can type 2 diabetes be treated? (basic)
diet and exercise
complete this homeostatis summary gap fill
complete this diabetes diagram
how many people suffer from diabetes in the UK?
3.2 million
describe how the number of newly diagnosed people with diabetes has changed in the uK between 2001 and 2009
the number increased from approc 100,000 to 225,000
what is type 1 diabetes?
deficient insulin production in the pancreas