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.
Pituitary Gland. One of the main organs is the pituitary gland and is also known as master gland. It is called the 'master gland' as it produces hormones, which control the functioning of the other organs in the body. The pituitary gland is located on the lower side of the brain, and is the size of a pea.