Download Endocrine System

The Endocrine System
The Pituitary
Low magnification – the entire Pituitary Gland
Pituitary Stalk
Posterior Pituitary
Pars Intermedia
Pars Tuberalis
Anterior Pituitary
High mag of the Anterior Pituitary – note eosinophilic and basophilic cells
Immunohistochemictry of the Anterior Pituitary
Growth Hormone
ACTH
TEM of the Anterior Pituitary – note different granule morphology
C – corticotrophs (ACTH); G – gonadotrophs (FSH,LH) S – somatotrophs (growth
hormone); T Thyrotrophs (TSH) ; F – fenestrated capillary
High mag of the Posterior Pituitary – neurons, capillaries, and pituicytes
High mag of the Posterior Pituitary – note Herring Bodies (arrow)
TEM of the Posterior Pituitary
UN -unmyelinated neuron; asterisks – Herring Body
The Thyroid & Parathyroids
High mag of thyroid follicles – note Parafollicular or C-Cells (arrows)
Low Magnification of the Parathyroid Gland
Parathyroid Gland – note small dark staining chief cells and larger,
eosinophilic oxyphil cells
The Adrenal Glands
Low magnification of the Adrenal Gland
Cortex
Medulla
Cortex
Adrenal Cortex
Zona Glomerulosa
Zona Fasciculata
Zona Reticularis
Adrenal Cortex
Zona Glomerulosa
(clumps, cords, and
follicle like structures
Zona Fasciculata
(cords of spongiocytes)
Adrenal Gland
Zona
Fasciculata
cords of
spongiocytes
Zona
Reticularis
darker
staining cells
Adrenal Medulla
The Islets of Langerhan
Low magnification of the Pancreas with Islets of Langerhans (arrows)
High mag of an Islet – note Beta cells and more eosinophilic Alpha2 cells
Acini
Alpha
Cells
Immunohistochemistry of a pancrearic Islet of Langerhans
Glucagon
Insulin
Pineal Body
The Seat of the Soul
The Third Eye
Pineal Gland
N – neuroglia
P –pinealocytes
S – Brain Sand