1. A pair of adrenal or suprarenal glands are located just on the upper border of kidneys.
2. The adrenal gland shows two distinct regions, viz. thicker outer cortex and thinner inner medulla.
3. The adrenal cortex consists of three distinct regions. The outer zona glomerulosa, the middle zona fasciculata and inner zona reticularis.
4. Adrenal cortex produces corticoids. Corticoids is a collective term for many hormones, such as glucocorticoids, mineralocorticoids and steroid sex hormones.
5. Adrenal medulla secretes adrenaline or epinephrine and noradrenaline or norepinephrine.
