SUPRARENAL GLAND (CORTEX PART)

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Presentation transcript:

SUPRARENAL GLAND (CORTEX PART) Amirah Nu’aimi Bt. Zakaria D11A004 Siti Sarah Amiza Bt. Md Amin D11A034 Nur Farhana Bt. Othman D11A026

Properties Divided into Outer cortex (derived from mesenchyme) Inner medulla (derived from neural crest cells)

4 parts of Cortex 1- Zona glomerulosa 2 – Zona Intermedia 3 - Zona Fasciculata 4 – Zona reticularis

CORTEX Zona Glomerulosa - outer layer immediately beneath the capsule - in pig, horse & carnivore, it consists of curved cords or arcades of columnar cells. - in ruminant, as cluster of polyhedral cells. - the cellular cytoplasm is acidophilic with a small dark nucleus & secretes mineralocorticoids Polyhedral cells look like geometric figures, typically more than 6 Cord = look like long & thin

In horse In carnivore (cat)

CORTEX Zona Intermedia - lies between zona glomerulosa & zona fasciculata - cells appear undifferentiated - more common in horse & carnivores than domestic animals

CORTEX Zona Fasciculata The middle and broadest zone of the adrenal cortex Cells are regularly arranged in parallel cords, one to two cells thick Component cells are cuboidal, frequently containing two vesicular nuclei Vacuoles seen in some cells represent dissolved lipid droplets. Cholesterol is chiefly present in this zone. Cell cords are surrounded by sinusoids. Secretes the glucocorticoids, cortisone and cortisol.

H & E Stain, 50x

H & E Stain, 612 x

CORTEX Zona Reticularis - innermost zone next to the medulla - cells are small, darkly staining anastomosing cords surrounded by sinusoids. - secrete sex hormones