Functions of the Upper Respiratory Tract

921 WordsFeb 24, 20184 Pages
There are three major organs in the upper respiratory tract. The nose, the pharynx, and the larynx are all located outside of the chest cavity and play a major role in sustaining life. These three anatomical parts help draw in oxygen from the atmosphere to the lungs for gas exchange. However, these organs do not only contribute to the exchange of gases but also provide separate functions as well. The nose is the organ that projects above the mouth on the face of a person or an animal. The nose contains the nostrils and is used for breathing and smelling. It is the only external portion of the respiratory system. The nose is not comprised of bone but rather of cartilage. The nose has tiny hairs and sticky mucus which traps dust particles. The main role of the nose is to move dust particles to the nostril openings so they can be removed from the body. The pharynx is the membrane lined cavity that lies behind the nose and mouth. The pharynx connects the nose and mouth to the esophagus. Food and air pass through the pharynx before reaching their final destination. The pharynx is sometimes referred to as the throat. It contains a protrusion called the uvula which can be seen when looking in an opened mouth. The main role of the pharynx is to assist humans in speech and allow food and air into the body. The larynx is essential to human speech. The larynx is also known as the voice box. It is a muscular organ that forms an air passageway to the lungs. It
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