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 endosteum is a single cellular layer found lining the medullary cavity, the trabeculae, and the central canals. The endosteum consists mostly of osteoblasts and osteoclasts. BONE TISSUE AND STRUCTURE Two types of bone tissue are found in bones:1.rabeculae form an inner framework that is strong, light, and contains red bone marrow. â¢ Yellow bone marrow â Yellow bone marrow is found within the medullary (marrow) cavity of long bones. It consists mostly of adipocytes and functions as a nutrient (fat) storage site.