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ENDOCRINE
DD. DL.DSI.DSR.F
ADRENAL GLANDS
1 - capsule 2 - cortex 3 - medulla
1 – Capsule 2 - zona glomerulosa 3 - zona fasciculata 4 - zona reticularis 5 - Medulla
Close-up of the medulla which produces epinephrine (adrenalin) and norepinephrine.
Cortex
Makes MINERALCORTICOIDS, superficial ovoid groups
Makes GLUCOCORTICOIDS, Columns of cells
Makes ANDROGENS, Deep anastomosing cords of darker cells
Medulla
Capsule
Cortex
z. Fasciculata
z. Reticularis
z. glomerulosa
Capsule
Zona Glomerulosa Zona Fasciculata
THYROID GLAND
1 – follicle 2 - follicular cells 3 - colloid
The thyroid has follicles.
The parathyroid is made of
denser tissue.
Colloid contains thyroglobulin follicular cells secrete thyroid hormones
Follicle with colloid
Follicular cell
Parafollicular cell
Follicular cells– Simple Cuboidal epithelium , LINE the follicles Parafollicular cells – single or clumps, PERIPHERY (outside) the follicles
PARATHYROID GLAND
1 - chief cells 2 - oxyphil cells : Oxyphil cells produce PTH
• Chief cells – darker stain
• Oxyphil cells – lighter stain
PITUITARY GLAND
1 - posterior pituitary gland 2 - anterior pituitary gland
The anterior pituitary
(adenohypophysis) is also know as the
Pars distalis
The posterior pituitary
(neurohypophysis) is also known as the
Pars Nervosa
Pars Intermedia – remnant, Rathke’s
pouch
Anterior Pituitary
Adenohypophysis
The secretory cell of the adenohypophysis are the acidophils and basophils.
PARS DISTALIS contains:
Chromophobes
& Chromophils
(acidophils and basophils)
Posterior Pituitary
Neurohypophysis
PANCREAS
Pancreatic ducts stain lighter and are sometimes confused with isles of Langerhans
?
1 – acini
2 - islet of langerhans
Pacinian corpuscle in
pancreas