Consists of cortex and medulla.
Cortex
- zona glomerulosa: secretes mineralocorticoids
- zona fasciculata: secretes glucocorticoids and some androgens
- zona reticularis: secretes cortisol and DHEA. Darkly staining.
Medulla
- secretes epinephrine and norepinephrine
- pale staining clumps of chromaffin cells (do not take up H&E stains)
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