General outline Blood vascular system Heart Arteries Capillaries veins Lymphatic vascular system Lymphatic capillaries Lymphatic vessel Lymphatic ducts

第一节 胚胎的卵裂方式 第二节 卵裂的机制

一、原始心血管系统的建立 二、心脏的发生

一、原始消化管的形成和分段 第4周，胚盘卷褶，卵黄囊入胚体内，形成原始消化管

１．畸形学的概念 ２．畸形的成因 ３．畸形的分类 ４．致畸敏感期 ５．畸形的预防和治疗

一、奶牛的体型外貌鉴定 二、 瘦肉型猪的繁育 三、鸡的胚胎发育与雌雄鉴定 四、北京市奶牛中心种公牛站介绍

digestive and respiratory system derived from primitive gut /foregut /midgut /hindgut ---epi. of digestive and respiratory system derived from endoderm ---CT and MT of digestive and respiratory system derived from splanchnic or visceral mesoderm

1. Development of branchial apparatus * branchial apparatus: including branchial arch, branchial groove, branchial membrane and branchial pouch

1. Components: ---testis: produce the male germ cells- gametes(sperm) produce androgen-testosterone ---gernital ducts: store and conduct the sperm epididymis ductus deferens ejaculatory duct

1. Components ---nose ---pharynx ---larynx ---trachea ---bronchi ---lung