View full size image. The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.he endocrine system affects almost every organ and cell in the body, according to the Merck Manual. Although the hormones circulate throughout the body, each type of hormone is targeted toward certain organs and tissues, the Merck Manual notes.
(See Roll of arms). Heraldry (/ËhÉrÉldri/) is a broad term, encompassing the design, display, and study of armorial bearings (known as armory), as well as related disciplines, such as vexillology, together with the study of ceremony, rank, and pedigree.
Heraldry is connected with genealogy, with numismatics, paleography, and sphragistics. The data of heraldry are used in various branches of historical scholarship. Heraldry originated from the custom of announcing before the beginning of a tournament the design of a knightâs coat of arms as proof of his right to participate in the competition.