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

---Digestive system: Digestive tract Digestive gland

1. General description: ---Components: nerve cell: neuron Glial cell: neuroglial ---Function: Neurons : receive the stimulation, conduct the nerve impulse Glial cell: support, protect and insulate, nourish neurons

1. General description (1) components: ---cell: muscle fiber-myofiber elongated thread-liked Sarcolemma Sarcoplasm sarcoplasmic reticulum: SER

---Closed tubular system ---Blood circulatory or cardiovascular S ---Lymph vascular S

1. Cartilage: organ=Cartilage tissue+perichondrium

1. General features: （1) small number of cells and large amount of extracellular ground substance （2) extracellular is composed of fibers and amorphous ground substance-matrix （3) all of them originate from mesenchyme￾embryonal CT （4) have functions of connection, supporting, protecting, nutrition, defence and repairing

1. 掌握虫卵的形态特征。 2. 了解成虫外形和内部结构。 认识中间宿主和吸虫纲生活史各期形态