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Complete respiratory system. The respiratory tract is divided into the upper airways and lower airways.The upper airways or upper respiratory tract includes the nose and nasal passages, paranasal sinuses, the pharynx, and the portion of the larynx above the vocal folds (cords).
In humans and other mammals, the anatomy of a typical respiratory system is the respiratory tract.The tract is divided into an upper and a lower respiratory tract.The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds.
The lateral semicircular canal (also known as horizontal or external semicircular canal) is the shortest of the three canals.Movement of fluid within its duct corresponds to rotation of the head around a vertical axis (i.e. the neck), or in other words, rotation in the transverse plane.
The forest area in the headwaters of the Deli is 3,655 hectares, or 7.59 percent of 48 162 hectares of Deli watershed. With an area of 48 162 hectares, length of 73 kilometers (km), and a width of 5.58 m, Deli watershed should have at least 140 hectares, or 30 percent of the watershed.
Elasmobranchs lack swim bladders, and maintain buoyancy with oil that they store in their livers.Some deep sea sharks are targeted by fisheries for this liver oil, including the school, gulper and basking sharks (pictured). [1]