The radiation pattern. depends on the number and the type of elements be-. ing used, and the physical and electrical structure of. the array. Numerous variations of antenna structures, as well as the type of elements are available, but for. simplicity only one kind of element is used in the. whole array structure [2].
However, organ is a group of organized tissues performing specific or group of functions. â¢ Gland always secretes substances but not all the organs secrete substances. â¢ Gland is always a tubelike structure but organ is not always in that nature. Ex: liver is a dense organ but stomach is a hollow organ.
Trachea and esophagus are two different organs present in almost every animal. The basic difference between esophagus and trachea is that the former forms part of the digestive system of a living organism whereas the latter is a part of the respiratory system.Being parts of different systems, both trachea and esophagus perform different functions.nother important difference between trachea and esophagus can be seen in their blood supplies. The former gets its blood supply from the lower thyroid arteries while the arteries in the thorax and abdominal region supply blood to the latter.