KIN 272 Lecture Notes - Lecture 4: Thyroid, Cholecalciferol, Blood Sugar
Document Summary
Digestive tract (increase absorption via (gut) activated vitamin d3) Fill in the loop as with parathyroid hormone. Pancreatic beta cells are destroyed by immune system. Type two: fat and skeletal muscle cant take up the insulin being released. Insulin receptors do not signal glucose transporters to the cell membrane. Same feedback loop at insulin, energy storage. Water stays in urine because of osmotic pressure. Can control how much water we lose at any given time. Hint: this looks like diabetes mellitus with. Type one similar to central diabetes insipidus. Type two looks like nephrogenic diabetes insipidus. Feeds back into releasing hormone and stimulating hormone. Complex endocrine loops allow variable responses: cortisol and stress. Stimulate use of protein and fat instead of glucose. Short-term stress: the hypothalamus activates the adrenal medulla via neural stimuli. Action potentials (aps) triggered by the hypothalamus in response to stressors activate the sympathetic nervous system. Aps travel along preganglionic sympathetic axons to the adrenal medulla.
