Your Thyroid

A Home Reference

M. Wood, S. Cooper, E. Ridgeway

За особеностите на екземпляра

Състояние:: Много добро
Забележка:: Много добре запазена.
Език:: Английски
Наличност:: 1 бр.

За изданието

Издателство:: Ballantine Books
Град на издаване:: New York
Година:: 1982 г.
Език:: Английски
Страници:: 211
Корици:: Меки
Категория:: Медицина и биология

Your thyroid is one of the many glands in your body that make special chemicals known as hormones. Hormones travel in your bloodstream throughout your body to affect many different parts of your system, including your brain, heart, liver, kidneys, muscles, bones, and skin. Therefore, it is not surprising that a change in any hormone level can produce abnormalities all over your body. Once they arrive at a particular tissue, hormones interact with receptors located either on the outside of the cell or inside the cell in the cytoplasm or nucleus to trigger a certain function. The particular hormone made by your thyroid gland acts on receptors located in the nucleus, affecting the rate at which many bodily processes happen. Normally, your blood level of thyroid hormone is constant, with little day-to-day variation. However, if the gland becomes diseased, it may produce high thyroid hormone levels that may speed up body processes, causing symptoms like rapid heartbeat (palpitations), nervousness, frequent bowel movements, and weight loss as you burn up calories more rapidly. By contrast, a poorly functioning gland may produce less than a normal amount of thyroid hormone, which may slow your heartbeat and make you tired, depressed, and constipated. A low thyroid hormone level also may cause your skin, hair, and fingernails to grow more slowly, so they become rough, dry, and brittle. You may gain some weight, but usually no more than three or four pounds. This is primarily due to fluid retention rather than an increase in body fat. In short, if your thyroid is underactive, you will probably feel generally "run down."..

Ключови думи: A Home Reference, Your Thyroid, Медицина, биология