The function of the atrioventricular valves is to keep blood in the heart flowing in one direction, according to science educator Regina Bailey for About.com. These connect the atria and the ventricles together. They consist of endocardium and connective tissue. Atrioventricular valves are one of two types in the heart, the other being semilunar.Know More
Atrioventricular valves can be further classified into the mitral valve and the tricuspid valve. According to LearnTheHeart.com, the mitral valve is more important in healthy heart function. When patients with recurring tricuspid valve endocarditis have the tricuspid valve removed, they are not likely to develop heart disease. Several diseases involve abnormalities of the mitral valve, including mitral valve prolapse, mitral regurgitation, tricuspid regurgitation and mitral stenosis.
Mitral valve prolapse is a disease of connective tissue causing the valves to prolapse into the left atrium during systole. This can lead to mitral regurgitation, which is the abnormal backflow of blood from the left ventricle to the atrium. Tricuspid regurgitation involves abnormal backflow of blood from the right ventricle to the right atrium. Mitral stenosis is a decrease in the mitral valve area that disrupts normal blood flow from the left atrium to the left ventricle. Tricuspid stenosis is a rare condition that may also develop from an abnormal mitral valve, notes LearnTheHeart.com. It involves abnormal stiffening or immobilization of the tissues of the tricuspid valve.Learn More
Body mechanics is defined as "the study of proper body movement to prevent and correct posture problems, reduce stress and enhance physical capabilities," according to About.com. Most back problems can be attributed to poor body mechanics.Full Answer >
The heart has two ventricles, which primarily pump blood to the entire body, explains Regina Bailey on About.com. These are the lower two chambers of the heart, and they are separated by a septum into the left and right ventricle.Full Answer >
The function of the laryngopharynx is to pass food and air. The laryngopharynx is part of the pharynx, which connects the mouth and nasal cavities with the esophagus. Its primary responsibility is to guide food and air to their appropriate locations.Full Answer >
The oropharynx accepts air from the nasopharynx and passes it to the laryngeal pharynx. It also accepts food from the mouth and passes it to the esophagus. The oropharynx resides below the soft palate and above the epiglottis. Taken in totality, the pharynx connects the oral cavity and nasal cavity with the esophagus and windpipe.Full Answer >