Endocrine SystemHistology Laboratory Orientation

Hypothalamus and Hypophysis

Hypothalamohypophyseal tract

Infundibulum

Median eminence

Pars nervosa

Long and short hypophyseal portal veins

Primary plexus of hyophyseal portal veins in median eminence

Secondary plexus of hypophyseal portal veins

Superior hypophyseal artery

Inferior hypophyseal artery

Drainage of the veins to cavernous sinus

Cross (transverse) sectionFrontal view

#226 (H) xc trichrome (human)

#226 (H) xc H&E (human)

#226 H (H&E)

#226 (trichrome)

SS

226 (H&E) Sinusoidal capillaries

Hypophysis (sagittal section)use for Pars nervosa and intermedia

#227(H) sag Trichrome#226 (H) sag H&E

Pars nervosa Note capillaries and

pituicyte nuclei

#227 (H) sag trichrome #226 (H) sag HE

#227 (M) xc triC (also 227(M) xc HE)

#227 (M) xc Monkey

Pars Intermedia

#227 (M) xc Trichrome

#226 (H) sag HE and 227 (H) sag triC

Pars intermedia (PI) and remnants of Rathke’s pouch (RP)

PI

RP

RP

PI

#229 Human, sagittalInfundibular Stalk

Hypophyseal portal veins (system)

Also, #229B Human, Infundibular Stalk

#217 Thyroid gland

Parathyroid gland

#218 Rat Normal

#218 Rat Hypoactive

#218 Rat Hyperactive

#217

#220

#221

Parathyroid

Oxyphil cells

Kidney and Suprarenal Glands in situ

#230 Human Adrenal (suprarenal) gland

#230 Human Adrenal gland

#230 Adrena

l Cortex

Z. Glomerulosa

Z. Fasciculata

Z. Reticularis

#230 Adrena

l Medull

a

Branch of central vein

#231 Monkey adrenal gland

WebSlide 95: pancreas

Islet of Langerhans – contrast with surrounding acinar cells and note the rich capillary bed.