01:119:116 Lecture Notes - Lecture 13: Posterior Pituitary, Aldosterone, Weight Loss

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Professor Beal

Document Summary

This is a good place to consider iov: as we continue, consider how these hormones regulate the systems that we cover for the rest of the semester. A. simple endocrine pathways (important: figure 45. 10: endocrine cells respond directly to stimulus (secretes hormones), hormone travels via bloodstream -> interacts with target cells, physiological response, example: ph in duodenum. B. simple neuroendocrine pathways (important: figure 45. 11: stimulus received by sensory nerve first, stimulates neurosecretory cell (secretes hormones), travel via bloodstream (to interact with target cells and physiological response), example: release of milk during nursing. C. feedback control: negative feedback- restores to set point, positive feedback- amplifies and reinforces. A. molting (ecdysis: larva grows in discrete stages and must molt periodically, or shed exoskeleton, endocrine pathway begins at larval stage. B. endocrine pathway (important: figures 45. 11 and 45. 12: 1. ) Neurosecretory cells in brain produce ptth: ptth- polypeptide neurohormone, 2. ) Ptth signals prothoracic gland to make ecdysteroid: 3. ) Ecdysteroid produced in bursts, which causes molting and metamorphosis: 4. )