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.
It is simply one of the elements that make up the whole. 3. PLOT. A plot is a causal sequence of events, the why for the things that happen in the story. The plot draws the reader into the characters lives and helps the reader understand the choices that the characters make. A plot's structure is the way in which the story elements are arranged. Writers vary structure depending on the needs of the story. For example, in a mystery, the author will withhold plot exposition until later in the story.