Chapter12 Lactation Teachering Hours 2 hours Intensive Teaching:The formation and regulation ofmilk Nodi for student:Milk formation;process of milk secretion;regulation of milk secretion Seactionl The structure of breast Include:(1)acinus (2)Lactiferous duct Seaction2 Development and it's regulation of breast 1 development of breast (1)Before puberty:Adipose tissue and connective tissue were welldeveloped (2)Complete puberty:breast developed (3)gestation:the acinus and lactiferous duct weredeveloped. 2 The regulation of breast development (1)Hormonalregulation i)development oflactiferous duct:role of the estrogens. ii)development ofacinus:Progesterone is pivotal,but also with other hormones just estrogens,groth hormone,prolactinand adrenocortical hormone. (2)Regulation by nerve:promoted the development ofbreast. (3)The quantity of sex hormone receptor in mammary glandular cell and its sensibility to sex hormone. (4)HeredityChapter12 Lactation Teachering Hours ：2 hours Intensive Teaching：The formation and regulation of milk Nodi for student：Milk formation; process of milk secretion; regulation of milk secretion Seaction1 The structure of breast Include: (1) acinus (2) Lactiferous duct Seaction2 Development and it’s regulation of breast 1 development of breast (1) Before puberty: Adipose tissue and connective tissue were welldeveloped (2) Complete puberty: breast developed (3) gestation: the acinus and lactiferous duct were developed. 2 The regulation of breast development (1) Hormonal regulation i）development of lactiferous duct: role of the estrogens. ii）development of acinus:Progesterone is pivotal，but also with other hormones just estrogens,groth hormone,prolactin and adrenocortical hormone. (2)Regulation by nerve: promoted the development of breast. (3) The quantity of sex hormone receptor in mammary glandular cell and its sensibility to sex hormone. (4)Heredity