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.
Cranial cavity: enclosed by the skull and contains the brain, eyes, and ears. Spinal canal: enclosed by the spine and contains the spinal cord. Ventral body cavity contains the thoracic cavity (contains the lungs and heart) and the abdominopelvic cavity (contains abdomen and pelvic cavity).Abdominal cavity: enclosed by the ribcage and pelvis and contains the kidneys, ureters, stomach, intestines, liver, gallbladder, and pancreas.entral body cavity contains the thoracic cavity (contains the lungs and heart) and the abdominopelvic cavity (contains abdomen and pelvic cavity).