Endocrine Pancreas Flashcards
What cells are responsible for producing glucagon?
Alfa cells
What cells are responsible for producing insulin?
B cells
What cells are responsible for producing somatostatin?
Delta cells
What glucose transporter is insulin sensitive?
GLUT4
What glucose transporter is important for glucose entrance into the beta cell?
GLUT2 (insulin independent )
What phase of insulin secretion requires synthesis of new insulin by beta cells?
Chronic phase
What is the acute phase of insulin secretion by beta cells
Preformed insulin inside of vesicles is released from the beta cells
What type of receptor does insulin bind?
Tyrosine kinase
What hormone is released after hypoglycemia
Catecholamine
Under insulin action, what is the main function of the liver?
Decrease gluconeogenesis
What hormone is stimulated by hyperglycemia
Insulin
What polypeptide hormone induces ketogenesis in the liver and is released after protein ingestion in carnivores?
Glucagon
Where does gluconeogenesis take place?
Liver and kidney
What enzyme is responsible for the release of FFA and glycerol in the blood during diabetes
Hormone-sensitive lipase
What type of diabetes is caused by a complete lack of lnsuin production leading to hyperglycemia
Type 1 diabetes mellitus
Decreased glucose uptake by muscle and adipose tissue, and increased gluconeogenesis leads to _________
Hyperglycemia
What hormone produced by the beta cells can aggregate causing irreverence beta cell damage in cats?
Amylin
What is the response of beta cells in the early stages of insulin resistance?
Increase insulin production
In what type of diabetes is associated with obesity leading to decreased insulin sensitivity
Type 2 diabetes mellitus
What are the reversible and irreversible type 2 diabetes mellitus
Irreversible: amyloidosis (increased insulin production due to reduced sensitivity increased amylin deposits)
Reversible: glucotoxicity
What are the three ketone bodies?
Acetoacetate
Beta hydroxybutirate
Acetone
Production of ketone bodies is stimulated by ?
Glucagon