There are two adrenal glands, each located just above their respective kidney. Proximity to these blood-rich organs ensures the glands have access to a steady supply of oxygenated blood. Each gland has an outer cortex that surrounds an inner medulla. They are not mirror organs: in humans, the right adrenal gland is pyramidal while the left is larger and crescent-shaped. The glands are yellowish and weigh just a few ounces; they are covered by a protective fatty capsule. Excess visceral fat deposited here can cause adrenal stress.
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