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Diverticulitis, Diverticulosis, and Dietary Fiber
Diverticulitis is a medical condition in which there is inflammation of diverticula. The suffix, -itis, means inflammation. But what are diverticula (plural)? A diverticulum (singular) is a small, marble-shaped pouch which projects outward from the wall of the intestine. A diverticulum can develop anywhere in the gastro-intestinal tract, which includes the stomach, small intestine, and large intestine. But diverticula occur most often in the colon, which comprises the majority of the large intestine.
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The Anatomy of a Heart Attack
A human heart consists of four chambers. There are two receiving chambers — the right atrium and the left atrium. And there are two pumping chambers — the right ventricle and the left ventricle. Blood enters the heart by way of the two atria (plural of atrium) and is pumped out by the two ventricles. The walls of these chambers are composed of a special type of muscle called cardiac muscle. The ventricles contract approximately once every second in order to pump blood through the blood vessels of the body. That amounts to approximately 32 million contractions in just one year.
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Anatomy of Torn Cartilage and Other Knee Injuries
The human knee is a very complicated joint. Two major bones come together at the knee — the femur (thigh bone) and the tibia — (shin bone). There is a third bone located at the knee — the patella (knee cap), but it does not participate in the joint between the femur and the tibia. The lower end of the femur has two side-by-side convex curved surfaces, while the upper end of the tibia has two side-by-side concave curved surfaces. The convex surfaces on the femur are obviously designed to fit into the concave surfaces on the tibia. But there are several things located in between.
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