Endocrine System Thyroid gland (No.35) Adrenal gland (No.36)

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Endocrine System Thyroid gland （甲状腺）(No.35) Adrenal gland （肾上腺）(No.36)

Presentation transcript:

Endocrine System Thyroid gland (No.35) Adrenal gland (No.36) Hypophysis (No.37) Next Lab: Quiz3 (Dig.Res.Uri.Endo. System) Jun Zhou School of Medicine, Zhejiang University 20131211

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 3)Colloid Interfollicle stroma

colloid Follicular cell: Simple cuboidal epithelium

P Parafollicular cells

Parafollicular cells, silver-stained

Adrenal gland Capsule Cortex Medulla

Cortex zona glomerulosa zona fasiculata zona reticularis

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:polyhedral, with chromaffin granules Medullary vein

Chromaffin cells

Medulla: Sympathetic ganglionic cells neuron

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

Pars distalis

Pars intermedia Follicles Basophilic cells

Pars nervosa: unmyelinated nerve fiber Herring body

Pars distalis Pars intermedia Pars nervosa

lipofuscin

The end!