However, the structure of lymphatic tissues vary according to the particular type of lymphatic tissue or organ they form a part of - (a), (b) or (c) above, and possibly also it's location in the body-especially in the case of (c) Lymph (Fluid).
The exposition is the portion of a story that introduces important background information to the audience; for example, information about the setting, events occurring before the main plot, characters' back stories, etc.
Elements of Plot Exposition sets the scene. The writer introduces the characters and setting, providing description and background. Complication, sometimes called the inciting incident, is a single event that begins the major conflict. Rising Action builds during the story and gets more exciting. Climax is the moment of greatest tension in the story.