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MaryO
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How the Body Works: The Adrenal Cortex and Medulla

 

The adrenal glands sitting above the kidneys are richly supplied with blood and with sypathetic nerve endings. Block sections show the blood supply and cellular arrangement of the adrenals. Two different regions are distinguishable--the cortex, controlled by the pituitary hormone ACTH, produces hormones which maintain body chemistry, and the medulla, which secretes adrenaline and noradrenaline to increase body activity.

 

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Bear Silber, a self-professed

Redditor, was ill for five years. An active athlete who ran San Francisco's Bay to Breakers marathon in an hour, he started getting strange symptoms including rapid weight gain and high blood pressure. A doctor couldn't diagnose what was going on.

 

Despondent, he went on Reddit one fateful Saturday night and saw a picture of a man who looked like he had similar symptoms. After reading through the comments, he saw one by a user who suggested the man might have Cushing's syndrome, a disease caused by a tumor that produces high levels of adrenocorticotropic hormone or cortisol, a natural hormone created by the pituitary gland. Immediately, Silber looked up the symptoms of the disease, which include weak muscles, bone pain, and upper body obesity, and found out he had every single one listed.

 

 

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