Grace Lee Whitney. Grace Lee Whitney (April 1, 1930 â May 1, 2015) was an American actress and singer. She was known for her role as Janice Rand on the original Star Trek television series and subsequent Star Trek television series and films. Contents.
The Codex Alimentarius is recognized by the World Trade Organization as an international reference point for the resolution of disputes concerning food safety and consumer protection.upporters of the Codex Alimentarius say that it is a voluntary reference standard for food and that there is no obligation on countries to adopt Codex standards as a member of either Codex or any other international trade organization.
The structure of the epithelium varies in different parts of the alimentary canal, but it always contains cells which secrete mucus. 42833iem24lnq9k Beneath it is a layer of connective tissue called lamina propria, which means âclosest layerâ. And beneath that is a layer of smooth muscle called the muscular is mucosa.he serosa is a very thin layer, made up of connective tissue covered with a single layer of thin, smooth closely fitting cells. en833i2424lnnq We can observe in detail each part of the human alimentary canal structure in this diagram. The mouth: Taking food into the mouth is called ingestion.