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)Heredity
Chapter12 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
Seaction3 Milk formation and secretion 1 Milk (1)Colostrums:The milks secreted in 3~5days ofantepartum and post partum The functions ofcolostrums: i)offered plasma proteins i)）offered antibody iii)offered Fe2+,Mg2+ iv)offered VitA.VitC.VitD (2)general milks: 2.The formation process of milk Formation placement:acinus Material:from blood Essential component:lactoprotein;lactose;butter fat 3.Milk secretion (1butter fat secretion (2)lactoprotein secretion (3)lactose secretion (4)secretion ofNa+and K+ 4.Regulation of milk secretion (1)Initiation oflactation prolactin,GH,adrenocortical hormone (2)maintenance oflactation
Seaction3 Milk formation and secretion 1 Milk (1) Colostrums: Themilks secreted in 3~5days of antepartum and post partum The functions of colostrums: i）offered plasma proteins ii) offered antibody iii) offered Fe2+, Mg2+ iv) offered VitA, VitC,VitD (2) general milks: 2. The formation process of milk Formation placement : acinus Material: from blood Essential component: lactoprotein; lactose; butter fat 3. Milk secretion (1)butter fat secretion (2) lactoprotein secretion (3)lactose secretion (4)secretion of Na+ and K+ 4.Regulation of milk secretion (1) Initiation of lactation prolactin, GH, adrenocortical hormone (2) maintenance of lactation
Thyroxine;prolactin;GH;adrenocortical hormone Seaction4 Milk Ejection 1 cumulation of milk (1 milk is stored in acinus,lactiferous duct and cistern (2)The milk secretion would be restrained when the inner pressure of breast increased 2 the process of milk ejection 3.The neural-humoral regulation of milk ejection
Thyroxine; prolactin; GH; adrenocortical hormone Seaction4 Milk Ejection 1 cumulation of milk （1）milk is stored in acinus, lactiferous duct and cistern （2）The milk secretion would be restrained when the inner pressure of breast increased 2 the process of milk ejection 3. The neural-humoral regulation of milk ejection
