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