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.
â¢ Abdominal Cavity â space below the diaphragm, commonly referred to as the belly, that contains the kidneys, stomach, intestines, and other organs of digestion. â¢ Pelvic Cavity â the space formed by the bones of the pelvis and contains the organs of elimination and reproduction. b. Dorsal Cavity â contains the structures of the nervous system and is subdivided into: â¢ Cranial Cavity â space containing the brain. â¢ Spinal Cavity â space within the bony spinal