Physiology 2130 Lecture Notes - Lecture 13: Anterior Pituitary, Posterior Pituitary, Basal Metabolic Rate

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

Module 13: endocrine system: recall: conditions in body maintained by 2 special systems that use negative feedback loops; the endocrine and nervous system. Function of the endocrine system: maintenance of internal environment, stress adaptation and control of growth/metabolism/reproduction, actions of the endocrine system are slower to take effect than nervous system but they last longer. Glands: endocrine glands are specialized cells that store and hormones into blood, hormone circulates and targets specific cells resulting in stimulation or inhibition. Hormones 3 categories based on their chemical makeup: hormones derived from aa tyrosine secreted from thyroid gland, thyroxine triiodothyronine, hormones derived from proteins, calcitonin, parathyroid hormone, pituitary and pancreatic hormones. The second messenger: hormone binds to receptor, causes g-protein on inside to produce a second messenger (1st being hormone) that is most widely camp camp alters proteins already present inside cell and trigger sequence of reactions.