AVS 101 Chapter Notes - Chapter 12: Mammary Gland, Colostrum, Nipple
28 Mar 2016
School
Department
Course
Professor
Document Summary
Chapter 12 - avs 101 - introduction to animal science by w. stephen damron - 5th. Lactation - the process of producing milk. Often defines the difference between mammals and non-mammals. Milk - liquid produced and secreted from the mammary glands of the females in a mammalian species. Comprised of water, triglycerides, lactose, protein, minerals, and vitamins. Prenatal period: basic structures of mammary gland begin development. From birth to puberty: mammary gland develops at same pace as the rest of the body. During puberty: mammary gland begins developing at a much faster rate than the rest of the body. Due to female sex hormones progesterone and estradiol. At parturition: lactogenesis - cellular changes where mammary epithelial cells convert from nonsecretory state to the secretory state. Stage 1: colostrum formed milk that has more nutrients and immune function. Stage 2: copious milk secretion begins colostrum production stops. Alveoli - spherical structures capable of storing milk produced by the secretory cells.
