BIO 3303 Lecture Notes - Lecture 15: Hyperglycemia, Posterior Pituitary, Alpha Cell

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Longer lasting, once through the membrane, can keep working. Way to regulate the chemicals in the system. Increase blood glucose level by telling liver to release sugar. Reduce blood sugar, glucose uptake in target cells. Antagonistic function for sensitive coordinated maintenance of blood sugar levels. Type 1: autoimmune destruction of beta cells (insulin producing) Insulin in circulation but tissues are not responding. Both scenarios --> blood sugar levels cannot be controlled. Drugs to effect these factors and help with type 2 diabetes. Measure of how much affinity a receptor has for a given messenger. Can control how tissues respond depending on what mix to use. If it is low --> they close potassium channels in eyestalk. When depolarized enough, releases chh crustacean hyperglycemic hormone. Chh binds to target cells to release glucose. Oxytocin signals smooth muscle to release prostaglandins and causes contraction.