The thymus is an organ composed of two lobes and is located directly in front of the heart and behind the sternum. It is a critical part of the immune system because it trains and modifies T cells that are used by the body to fight foreign materials that can cause sickness.
Marketing managers typically have a bachelor's degree in marketing or business administration; however, some employers may prefer a master's degree, in addition to extensive experience in marketing, advertising, brand management or sales.
In most positions concerning advertising design, a bachelor's degree is required for entry level work, according to the Bureau of Labor Statistics. Work as a graphic designer, advertising manager or art director requires a bachelor's degree to get started. Advertising designers who have a strong background in other areas of advertising can be an asset to employers.