1201-1210 of 2961 Results Found
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Anatomy and Function of the Heart Valves What are heart valves? The heart has four chambers: two upper chambers (atria) and two lower chambers (ventricles). Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood
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Reducing Your Health Risks with Vaccines Vaccines are one of the best ways to reduce your risk of certain major illnesses called infectious diseases. Avoiding certain infectious diseases or their complications will help to keep you healthier so you can continue be active in life
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Polycystic Kidney Disease What is polycystic kidney disease (PKD)? Polycystic kidney disease (PKD) is a rare genetic disorder. It causes many cysts filled with fluid to grow in the kidneys. PKD cysts can impair how the kidneys work. It can lead to kidney failure. PKD is the
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Peutz-Jeghers Syndrome and Cancer Peutz-Jeghers syndrome (PJS) is a rare, inherited condition. It's passed to a child from a parent. PJS is an autosomal dominant genetic disorder. This means you need only one copy of the altered (mutated) gene to have PJS. About 3 out of every 4
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The Digestive System: An Overview What is digestion? Food and drink must be changed into smaller molecules of nutrients to be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and liquid are broken down into smaller parts
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About the Heart and Blood Vessels The heart is the hardest working muscle in the human body. Located almost in the center of the chest, a healthy adult heart is the size of a clenched adult fist. By age 70, the human heart will beat more than 2.5 billion times. The heart is
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Making the Home Environment Safe What's involved in making the home environment safe? When caring at home for an ill, aging, or disabled person of any age, it's important to think about home safety. Print out this helpful checklist. Then use it to check for safety issues around
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Birth Injuries What is a birth injury? Sometimes during the birth process, the baby may suffer a physical injury that impairs function or structure of their body. This is sometimes called birth trauma or birth injury. It can happen during labor, delivery, or after delivery. Birth
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Uniparental Disomy: Prader-Willi Syndrome and Angelman Syndrome What is uniparental disomy? Chromosome pairs affect how our body works. Normally, a baby gets one copy of each chromosome pair from each birth parent. In rare cases, two copies come from the same parent. This is
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The Thyroid Gland Anatomy of the thyroid gland The thyroid gland is found in the front of the neck. It sits below the voice box (larynx) and on top of the trachea (windpipe). It has a butterfly-like shape. The small, 2-inch gland consists of 2 lobes, 1 on each side of the