Homeostasis Flashcards
Integrator
Compares data from the receptor and stored and stored set point and gives instructions to effector
Homeostasis
The maintenance of a stable internal environment in the body despite changes in the external environment
Negative feedback
Mechanisms that counteracts and stops further response
Set point
Ideal value of the variable
Response
Corrective change which brings the variable back to a set point
Receptor
Sensor that detects the change in the variable
Variable
Characteristic that is controlled
Effector
Brings about a corrective change
Stimulus
A change in the variable
Egestion
Removal of waste material that hasn’t been inside cells (fibre)
Excretion
Removal of water materials that’s are the products of cell reactions (urea)
Themoregulation
The ability of the body to keep its temperature close to 37 degrees centigrade (warm blooded organisms)
Why thermoregualtion important
In enzymes (involved in cell reactions) are overheated than they denature
Hypothermia
Body temperature is significantly below 37
Hyperthermia
Body temperature is significantly above 37
Blood glucose regulation- too high
Pancreas secretes insulin which binds to liver and muscle causing them to take up glucose and convert it into glycagon (stored glucose)
Blood glucose regulation- too low
Pancreases secrets glucagon which binds to liver and muscle causing glycagon to be converted into glucose
Type 1 diabetes
Beta cells don’t work so insulin didn’t produced
Type 2 diabetes
Receptors don’t respond to insulin
Type 1 cure
Insulin injections
Type 2 cure
Diet plan and exercise
How is diabetes tested for
Blood sugar test- high blood sugar= diabetes
Digestive enzymes produced by pancreas
Amylase/carbohydrase Protease Lipase Trypsin
Function of ribosomes in a cell
Protein, hormone, enzyme synthesis
Effect of too much insulin
Too much glucose converted into glycagon Glucose blood levels too low
Name for organs which secrete hormones
Endrocan glands
Structure of the skin
