The phrase genetic engineering, unfortunately, often conjures up images of macabre experiments resulting in Frankenstein-like monsters and the cold-hearted use of genetic information to create new social classes depending on our genes, as in the 1997 film Gattaca.2} However, genetic engineering can simply be defined as the manipulation or alteration of the genetic structure of a single cell or organism.
Medullary cavity. From Wikipedia, the free encyclopedia. The medullary cavity (medulla, innermost part) is the central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored; hence, the medullary cavity is also known as the marrow cavity.owever, the medullary cavity is the area inside any bone (long, flat, etc.) that holds the bone marrow.
The abdominopelvic cavity is also separated into two subdivisions, the â abdominal cavity â and â pelvic cavity â. The abdominal cavity contains the stomach, spleen, liver, intestines, and a few other organs.he walls of the ventral body cavity and outer covering of its organs contain a thin covering called the serosa (also called serous membrane). It is a double-layered membrane made up of two parts called the â parietal serosa â (lines the cavity walls) and â visceral serosa â (covers organs in the cavity).