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Blood Glucose Regulation

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by

Emily Hill

on 7 September 2015

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Transcript of Blood Glucose Regulation

The body is now lacking sugar, or it has too much sugar. Either way, the body needs to find a way to return the blood sugar back to its normal level.
Signal (Input)
Receptor
The receptor is the pancreas in this situation. The pancreas detects the influx or shortage of blood sugar and sends out a signal to fix the homeostatic imbalance.
Stimuli
Afferent Pathway
The pathway in which the hormones are transported is the circulatory system i.e. the blood stream.
Normal Set Point Range
The normal set point range for blood sugar is 72 mg/dL. Blood sugar normally goes up after eating a meal or is low if you don't eat, but if the body can't bring it back to normal, problems ensue.
Control Center
The control center is the pancreatic islets inside of the pancreas. The islets contain two major populations of hormone-producing cells (alpha and beta cells). These cells hold insulin and glucagon; these either raise or lower blood sugar.
Efferent Pathway/ Effector
The hormones travel through the blood to the liver, which is the effector. The liver then processes the insulin or glucagon to either produce or breakdown glycogen. The liver then circulates to formation of glycogen into glucose and vice versa.
Control Center's Signal (Output)
The pancreas then sends out insulin (if the blood sugar is low) or glucagon (if the blood sugar is high).
There's a Problem...
Let's Figure This Out
Back To Normal
Blood Glucose Regulation
Homeostatic Mechanisms
Variable:
Low/High Blood Sugar
Stimuli:
Lack/Abundance of Blood Sugar
Receptor:
Pancreas
Signal:
Hormones (vary)
Afferent Pathway:
Blood Stream
Control Center:
Pancreatic Islets
Normal Set Point Range:
72 mg/dL
Control Center's Signal:
Glucagon/Insulin
Efferent Pathway:
Blood Stream
Effector:
Liver
Feedback Response:
Negative
Your blood sugar is off
Feedback Response
The input signal is hormonal. One of the horomones could be epinephrine (+) or GLP-1 (glucagon-like peptide-1), GIP (glucose-dependent insulinotropic polypeptide)(-).
This response is negative
due to the body wanting to return
to its normal set point range.
Blood Sugar Problems
Low Blood Sugar:
Hypoglycemia
High Blood Sugar:
Hyperglycemia
Type 1 Diabetes:
A disease that result in lack of production of insulin.
Type 2 Diabetes:
A chronic condition that affects the way the body processes blood sugar
Diabetes Mellitus:
Hypoactivity of insulin.
Full transcript