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

器官的定义：由多种组织构成的具有一定的外部形态和内部结构,并执行一定生理机能的植物体的组成部分。被子植物的器官一般可分为根、茎、叶、花、果实和种子六个部分。被子植物器官通常分为两大类：（１）营养器官：根、茎、叶作用：吸收、制造、和供给植物体所需要营养物质。（２）繁殖器官：花、果实、种子作用：繁殖后代延续种族