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 02/27/2009
During adolescence, children develop the ability to: Comprehend abstract content, such as higher mathematic concepts, and develop moral philosophies, including rights and privileges Establish and maintain satisfying personal relationships by learning to share intimacy without inhibition or dread Move gradually towards a more mature sense of identity and purpose Question old values without a sense of dread or loss of identity PHYSICAL DEVELOPMENT Adolescence is characterized by dramatic physical changes moving the individual from childhood into physical maturity.
Adolescent test or procedure preparation 04/19/2010
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. Let your adolescent participate in making as many decisions as possible.
Adrenal glands 11/23/2009
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 08/01/2009
Advance care directives allow patients to provide instructions about their preferences regarding the care they would like to receive if they develop a terminal illness or a life-threatening injury.
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 10/27/2008
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 10/27/2008
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.