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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «H»:

  1. Horace Barker Horace Barker
    Horace Barker: See: Barker, Horace Albert....
  2. Horizontal Horizontal
    Horizontal: In anatomy, a plane passing through the standing body. A person lying on a bed is considered in a horizontal position. For a more complete listing of terms used in medicine for spatial orientation, please see the entry to "Anatomic Orientation Terms"....
  3. Hormone Hormone
    Hormone: A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Many hormones are secreted by specialized glands such as the thyroid gland. Hormones are essential for every activity of daily living, including the processes of digestion, metab...
  4. Hormone therapy Hormone therapy
    Hormone therapy: A form of treatment that takes advantage of the fact that certain cancers depend on hormones to grow. Hormone therapy may include giving hormones to the patient or decreasing the level of hormones in the body....
  5. Hormone therapy (HT) Hormone therapy (HT)
    Hormone therapy (HT) or hormone replacement therapy (HRT): The combination therapy of estrogen plus a progestogen. Formerly, hormone replacement therapy (HRT). Estrogen therapy (ET) is used to treat the symptoms of menopause. It reduces or stops the short-term changes of menopause such as hot...
  6. Hormone, aldosterone Hormone, aldosterone
    Hormone, aldosterone: A hormone made by the outer portion (cortex) of the adrenal gland that regulates the balance of salt and water in the body. Pronounced AL·do·ste·rone. Aldosterone is secreted in response to low salt levels. Aldosterone then activates the MR (for mineralocor...
  7. Hormone, androgenic Hormone, androgenic
    Essential Screening Tests Every Man Needs Slideshow A Visual Guide to Erectile Dysfunction Slideshow Pictures Take the Quiz: The Human Body Hormone, androgenic: Any hormone that pr...
  8. Hormone, antidiuretic (ADH) Hormone, antidiuretic (ADH)
    Hormone, antidiuretic (ADH): A relatively small (peptide) molecule that is released by the pituitary gland at the base of the brain after being made nearby (in the hypothalamus). ADH has an antidiuretic action that prevents the production of dilute urine (and so is antidiuretic). A syndrome of...
  9. Hormone, cortisol Hormone, cortisol
    Hormone, cortisol: The primary stress hormone. Cortisol is the major natural glucocorticoid in humans....
  10. Hormone, erythropoietin Hormone, erythropoietin
    Hormone, erythropoietin: Erythropoietin is a substance produced by the kidney that leads to the formation of red blood cells in the bone marrow. Abbreviated: EPO. The kidney cells that make EPO are specialized and are sensitive to low oxygen levels in the blood coming into the kidney. These cells r...
  11. Hormone, estrogenic Hormone, estrogenic
    Hormone, estrogenic: A female hormone produced by the ovaries (or an equivalent hormone synthesized in the laboratory). Estrogen deficiency can lead to osteoporosis. ...
  12. Hormone, follicle-stimulating (FSH) Hormone, follicle-stimulating (FSH)
    Hormone, follicle-stimulating (FSH): A hormone produced by the pituitary gland that controls estrogen production by the ovaries....
  13. Hormone, glucocorticoid Hormone, glucocorticoid
    Hormone, glucocorticoid: A hormone that predominantly affects the metabolism of carbohydrates and, to a lesser extent, fats and proteins (and has other effects). Glucocorticoids are made in the outside portion (the cortex) of the adrenal gland and chemically classed as steroids. Cortisol is the majo...
  14. Hormone, growth Hormone, growth
    Hormone, growth: A hormone made in the pituitary gland that stimulates the release of another hormone called somatomedin by the liver, thereby causing growth. Growth hormone is synonymous with somatotropin and somatropin. More specifically (and technically), growth hormone is produced by the anteri...
  15. Hormone, human chorionic gonadotropin Hormone, human chorionic gonadotropin
    Hormone, human chorionic gonadotropin: See: Human chorionic gonadotropin....