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Anatomy and Function of the Urinary System How does the urinary system work? The body takes nutrients from food and changes them to energy. After the body has taken the food components that it needs, waste products are left behind in the bowel and in the blood. The kidney and

High Blood Pressure/Hypertension What is high blood pressure? Blood pressure is the force of the blood pushing against the artery walls. The force is made with each heartbeat as blood is pumped from the heart into the blood vessels. This is called systolic blood pressure. Blood

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

Asthma and Exercise Asthma is a long-term (chronic) condition causing swelling and narrowing of the airways. The muscles around the airways tighten, the lining of the airways swells, and extra mucus is produced. These changes make it harder to breathe. Triggers are things that

Effects of Stroke What are the effects of stroke? The effects of stroke vary from person to person. They are based on the type, severity, location, and number of strokes. The brain is very complex. Each part of the brain has a certain function or ability. When an area of the

Oral Health and Dental Specialists What is a general dentist (DDS or DMD)? To become a general dentist, a person must graduate from dental school and have either a DDS or a DMD degree: DDS. Doctor of dental surgery DMD. Doctor of dental medicine There is no difference between the

Sports-Related Injuries Most sports injuries are from either injury or overuse of muscles or joints. Most are caused by minor injury involving muscles, ligaments, tendons, or bones, including: Bruises. Sprains. Strains. Fractures. Dislocations. What is a bruise? A bruise is an

Necrotizing Enterocolitis in the Newborn What is necrotizing enterocolitis in the newborn? Necrotizing enterocolitis (NEC) is a serious, life-threatening illness in newborns. It happens when tissue in the large intestine (colon) gets inflamed. This inflammation damages and kills

Guillain-Barré Syndrome in Children What is Guillain-Barré syndrome in children? Guillain-Barré syndrome (GBS) is a short-term but often life-threatening disorder that affects the nerves in the body. GBS can cause muscle weakness, pain, and short-term (temporary) paralysis of the

Claudication What is claudication? Claudication is pain in your thigh, calf, or buttocks that happens when you walk. It can make you limp. It may be a symptom of peripheral artery disease (PAD). This is when narrowed or blocked arteries reduce the blood flow to your legs. At