Endocrine System Thyroid gland （甲状腺）(No.35) Adrenal gland （肾上腺）(No.36) Hypophysis（脑垂体） (No.37) Jun Zhou 20190521 School of Medicine, Zhejiang University

Thyroid gland Overview Capsule Parenchyma follicles with pink colloid isthmus lobe Overview Capsule Parenchyma follicles with pink colloid interfollicle stroma

Follicle Interfollicle stroma 1)Follicular cells Simble cuboidal epi Columnar (stimulated) Squamous (inactive) 2)Parafollicular cells（滤泡旁细胞） 3)Colloid（胶质） Interfollicle stroma

colloid Follicular cell: Simple cuboidal epithelium

P Parafollicular cells

Parafollicular cells, silver-stained

Adrenal gland Capsule Cortex Medulla

Cortex zona glomerulosa（球状带） zona fasiculata（束状带） Zona reticularis zona glomerulosa（球状带） zona fasiculata（束状带） zona reticularis（网状带）

capsule Zona glomerulosa Zona fasiculata Zona reticularis

Zona glomerulosa Small cells in clusters A few lipid droplets

Zona fasciculata Occupies large portion of the cortex Arranged in cords A lot of lipid droplets

Zona reticularis Smaller, deep red-stained cytoplasm Forming anatomizing network

Medulla Chromaffin cells（嗜铬细胞）: polyhedral, with chromaffin granules Medullary vein Medulla Chromaffin cells（嗜铬细胞）: polyhedral, with chromaffin granules Medullary vein

Chromaffin cells

Hypophysis (Pituitary gland) adenohypophysis Pars distalis Pars intermedia Pars tuberalis neurohypophysis Pars nervosa stalk

Hypophysis Infundibular stalk Pars distalis Pars nervosa Pars intermedia Hypophysis

Pars distalis Pars nervosa

Pars distalis Acidophilic cells Basophilic cells: peripherally located Chromophobe cells: most numerous

Acidophil Basophil Chromophobes Pars Distalis

Basophil Acidophil Chromophobes Pars distalis

Pars intermedia Follicles Basophilic cells

Pars nervosa: unmyelinated nerve fiber Herring body

Pars distalis Pars intermedia Pars nervosa

lipofuscin

实验报告： 拍典型图片1-2张，word上传 文件名：姓名-Endocrine system（20190521） Pituitary gland 1.adenohypophysis : Acidophil Basophil Chromophobes 2. neurohypophysis : Herring body

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