Glucagon
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Endocrine & Hormones
- Leptin
- Ghrelin
- Protein Hormones
- Steroid Hormones
- Insulin
- Diabetes
- Glucagon
- Epinephrine
- Cortisol
- Thyroid Hormones
- Calcitonin
- Parathyroid Hormone (PTH)
- Anterior Pituitary
- Prolactin
- Luteinizing Hormone (LH)
- Follicle-Stimulating Hormone (FSH)
- Growth Hormone (GH)
- Posterior Pituitary
Summary
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Key Points
- Glucagon
- Peptide hormone
- Binds to external cell receptors and initiates secondary messenger cascade
- Origin: alpha cells of the pancreas
- Produced in response to low blood glucose (hypoglycemia)
- Function:
- Increases blood glucose
- Increases glycogenolysis and gluconeogenesis in the liver
- Mobilizes glucose stores in liver
- Increases glycogenolysis and gluconeogenesis in the liver
- Promotes ketogenesis
- Ketone bodies can be used as an alternative source of energy in hypoglycemic states
- Increases blood glucose
- Peptide hormone