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  • Abdominal girth 11/13/2011
    Review Date: 11/13/2011 Reviewed By: David C.
  • Acute 11/14/2010
    Review Date: 11/14/2010 Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
  • Adolescent development 01/17/2011
    During adolescence, children develop the ability to: Understand abstract ideas, such as higher math concepts, and develop moral philosophies, including rights and privileges Establish and maintain satisfying relationships by learning to share intimacy without feeling worried or inhibited Move toward a more mature sense of themselves and their purpose Question old values without losing their identity PHYSICAL DEVELOPMENT During adolescence, young people go through many changes as they move from childhood into physical maturity.
  • Adolescent test or procedure preparation 05/12/2012
    There are a number of ways to help an adolescent prepare for a medical test or procedure. First, provide detailed information and explain reasons for the procedure.
  • Adrenal glands 12/11/2011
    Adrenal glands are triangle-shaped glands located on top of the kidneys. The outer part of the adrenal gland is called the cortex and produces steroid hormones such as cortisol , aldosterone , and testosterone . The inner part of the adrenal gland is called the medulla and produces epinephrine and norepinephrine , which are commonly called adrenaline and noradrenaline. When the glands produce more or less hormones than your body needs, you can become sick.
  • Advance care directives 11/17/2010
    Advance care directives allow patients to provide instructions about their preferences regarding the care they would like to receive if they develop an illness or a life-threatening injury and are unable to express their preferences.
  • Aerobic 11/14/2010
    Review Date: 11/14/2010 Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
  • Aging changes in body shape 12/13/2010
    Many people are concerned with changes in their body shape as they age. Although some changes inevitably occur with aging, your lifestyle choices may slow or speed up these changes. The human body is made up of fat, lean tissue (muscles and organs), bones, water, and other substances. As we age, the amount and distribution of these materials will change. Fat tissue may increase toward the center of the body, including around the abdominal organs.
  • Aging changes in hair and nails 12/13/2010
    Hair color change is probably one of the most obvious signs of aging. Hair color is caused by a pigment ( melanin ) produced by hair follicles. With aging, the follicle produces less melanin. Graying often begins in the 30s, although this varies widely. Graying usually begins at the temples and extends to the top of the scalp. Hair becomes progressively lighter, eventually turning white. Many people have some gray scalp hair by the time they are in their 40s.
  • Aging changes in hormone production 08/15/2010
    The endocrine system is made up of organs and tissues that produce hormones. Hormones are natural chemicals produced in one location, released into the bloodstream, then used by other target organs and systems. The hormones control the target organs. Some organ systems have their own internal control systems along with, or instead of, hormones. As we age, changes naturally occur in the way that body systems are controlled.
  • Aging changes in immunity 12/13/2010
    BACKGROUND The thymus, one of the organs of the immune system, is the site where certain immune cells called T lymphocytes (T cells) mature. The thymus begins to shrink (atrophy) after adolescence. By middle age it is only about 15% of its maximum size. Some of the T cells directly kill foreign particles. Others help coordinate other parts of the immune system, which are specialized to attack different types of infections. Although the number of T cells does not decrease with aging, T-cell function decreases.
  • Aging changes in organs - tissue - cells 05/22/2011
    All vital organs begin to lose some function as you age. Aging changes have been found in all of the body's cells, tissues, and organs, and these changes affect the functioning of all body systems. Living tissue is made up of cells. There are many different types of cells, but all have the same basic structure. Tissues are layers of similar cells that perform a specific function. The different kinds of tissues group together to form organs.
  • Aging changes in skin 08/15/2010
    Skin changes are among the most visible signs of aging. Evidence of increasing age includes wrinkles and sagging skin. Whitening or graying of the hair is another obvious sign of aging. Your skin does many things. It protects you from the environment, helps control your body temperature and fluid and electrolyte balance, and contains nerve receptors that allow you to feel sensations such as touch, pain, and pressure.
  • Aging changes in sleep 08/15/2010
    Sleep occurs in multiple stages. The sleep cycle includes dreamless periods of light and deep sleep, with occasional periods of active dreaming (REM sleep). The sleep cycle is repeated several times during the night. AGING CHANGES With aging, sleep patterns tend to change. Most people find that aging causes them to have a harder time falling asleep, and that they awaken more often. Total sleep time remains the same or is slightly decreased (6.
  • Aging changes in the bones - muscles - joints 08/15/2010
    Changes in posture and gait (walking pattern) are as universally associated with aging as changes in the skin and hair. The skeleton provides support and structure to the body. Joints are the areas where bones come together. They allow the skeleton to be flexible for movement. In a joint, bones do not directly contact each other. Instead, they are cushioned by cartilage in the joint, synovial membranes around the joint, and fluid.
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