MCDB 418 Lecture Notes - Lecture 1: Paracrine Signalling, Melatonin, Cell Membrane

• School: U of M
• Department: Molecular, Cellular and Developmental Biology
• Course: MCDB 418
• Professor: Cunming Duan

Document Summary

Endocrinology: study of hormone or chemical mediation. Too much thyroid hormone = mental retardation in babies. Hyperthyroidism = too much sweat; tired (high metabolism) Thyroid deficient = goiter = decreased iodine = increased eye bulbs. Hormones controls skin color and how fish can change its color to camouflage with surroundings. Controls sex hormones which controls gonad size. (babies with puberty like gonads) Hormones coordinate almost all the physiological activities within an organism: growth: enlargement of cells, tissues, or organisms by the net accumulation of material and/or increases in cell number. Hormones are major chemical agents that regulate these processes. Hormone control gonad development, gametogenesis, and sexual behavior. After fertilization, hormones are responsible for maintaining an intra-uterine environment supportive for a successful pregnancy +for development of fetus: lactation: After delivery, hormones maintain of infant by affecting lactation + parental behavior. Each year, about 200,000 death, 400,000 heart attacks. Type ii leads to nerve damage erectile dysfunction, numbness/weakness, nausea.