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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

Exercise During Pregnancy Getting regular exercise during pregnancy can often help reduce any physical discomforts. It can also help with recovery after your baby is born. But talk with your healthcare provider or midwife before starting an exercise program. Physical activity may

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

Anatomy of a Joint Joints are the areas where 2 or more bones meet. Most joints are mobile, allowing the bones to move. Joints consist of the following: Cartilage. This is a type of tissue that covers the surface of a bone at a joint. Cartilage helps reduce the friction of

Cystic Fibrosis and the Digestive System How does CF affect the digestive system? Children with cystic fibrosis (CF) have a protein in their cells that doesn't work right. The protein is called CFTR (the cystic fibrosis transmembrane regulator). CFTR controls the flow of water

First Aid for a Choking Baby Choking happens when an object or liquid gets stuck in the throat or airway. This can block the flow of air and cut off oxygen to the brain. A baby may have a weak cough and trouble breathing. Or they may not be breathing. If your baby is choking

Sex During Pregnancy In most cases, sex during pregnancy is safe. In fact, with your healthcare provider's OK, you can have sex until delivery. But changing hormone levels and sone pregnancy symptoms, like nausea and tiredness, can reduce your sex drive. So can visible changes in

Handwashing What is the best way to wash my hands? At home or work, wash your hands often—and correctly: Use clean, running water. The water can be warm or cold; either works well. Wet your hands before applying soap. Rub your soapy hands together for at least 20 seconds. Wash

Allergens: Dust and Dust Mites What are dust allergens? Dust allergens are substances found in dust. They may include: Fabric fibers Lint Feathers Stuffing materials Animal protein (dander, saliva, urine, and body oils) Bacteria Mold and fungus spores Food particles Plants

Eating Disorders in Children The common feature of all eating disorders is abnormal eating behaviors. Click on the links below to learn more about eating disorders in children. Anorexia Nervosa Bulimia Nervosa© 2000-2025 The StayWell Company, LLC. All rights reserved. This