Term
- Where is insulin produced
- Where is glucagon produced
- Relationship between Insulin and Glucagon
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Definition
- Beta cells of pancreas
- Alpha cells of pancreas
- They are counter regulatory- the effect of one hormone counteracts the other (and vise versa)
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Term
- Insulin: anabolic or catabolic and signals which state
- What dictates Insulin levels
- Glucagon: anabolic or catabolic and signals which state
- What dictates Glucagon levels
- Where does Glucagon act
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Definition
- Anabolic. Signals fed state
- Blood Glucose (& autonomic NS)
- Catabolic. Signals fasted state
- Absense of Glucose and Insulin
- On liver and adipose tissue. Not on muscle
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Term
- What does Insulin Increase
- What does Insulin Decrease
- Glucokinase and hexokinase found where
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Definition
- Increases
- Glycogen
- TGs stored as adipose
- Protein synthesis
- Decreases
- Fuel mobilization
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- Glucokinase found in Liver and Pancreas- low affinity for glucose.
- Hexokinase found in ALL other tissues- high affinity for glucose
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Term
- How is insulin gotten rid of
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Definition
- Glucose levels fall
- Insulin removed by Liver (and kidney and skeletal muscle)
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Term
- What does Glucagon Increase
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Definition
- Release of Glucose from glycogen
- Gluconeogenesis (from lactate, glycerol, & AAs)
- Mobilizes FA out of Adipose Tissue
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Term
What is glucose signal trasduction |
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Definition
cAMP directed phosphorylation cascade
- G-protein (receptor) activates
- Adenylate Cyclase, which produces
- cAMP, which activates
- Protein Kinase A, which activates
- PKA, which phosphorylates
- Target Proteins
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