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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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Carol Perkins-Rawle on The Big Idea on CNBC part 1

 

Founder and Owner of Harry Barker talks about her international modeling days, her struggles with Cushings disease that created a brain tumor (MaryONote: I think she got that backwards - the disease didn't create the tumor), which then inspired her to create Harry Barker.

 

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How the Body Works: the Anterior Pituitary Gland

 

The anterior pituitary gland, situated at the base of the brain, secretes several hormones which control the activity of other endocrine glands and influence general body growth. Messages from the higher centers of the brain stimulate hypothalamic cells to secrete hormones into the pituitary portal blood system.

 

Some of these hormones stimulate, and others inhibit, secretion of anterior pituitary hormones. Hormones produce numerous effects. For example, TSH stimulates thyroid hormone production, and GH affects bones and muscles. ACTH triggers hormone release from the adrenal cortex. Prolactin stimulates lactation. LH and FSH control hormone release by the testes and ovaries; and in maturity production of spermatozoa and ova in these organs.

 

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Interesting view of the pituitary gland and hormones: "a moment in the scheming mind of Professor Pituitary and his sidekick, Dr. Hypothalamus!! And... their minions, the Hormonal Kitties!"

 

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