Long direct quotations in MLA format. Long direct quotations consists of quotations that are longer than four lines of prose or three lines of verse, and the MLA format dictates how these are presented. 1  Use a free-standing block of text (block quote). 2  Omit the quotation marks. 3  Start the direct quotation on a new line. 4  Indent one inch from the left margin. 5  Indent the first word of 6  ... U
The gastrovascular cavity is a structure found in primitive animal phyla. It is responsible for both the digestion of food and the transport of nutrients throughout the body. The cavity has only one opening to the environment. Food goes in and waste comes out that same opening, making it a two-way digestive tract.
The coelom is the main body cavity in most animals and is positioned inside the body to surround and contain the digestive tract and other organs. In developed animals, it is lined with a mesodermal epithelium. In other animals, such as molluscs, it remains undifferentiated. The term coelom derives from the ancient greek word ÎºÎ¿Î¯Î»Î¹Î±, meaning cavity.