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.
Major Body Cavities. 1. Cranial cavity: cranial means skull, this cavity is located in the head superior the medial, and is surrounded by the skull. It also contains the pituitary and endocrine glands.2. Thoracic cavity: thoracic means chest, this cavity is located in the anterior portion of the body and the mediastinum.It contains the cavity that surrounds the breast bone and ribs. Containing the lungs, heart, trachea, larynx and bronchial tubes.3.. Cranial cavity: cranial means skull, this cavity is located in the head superior the medial, and is surrounded by the skull. It also contains the pituitary and endocrine glands. 2. Thoracic cavity: thoracic means chest, this cavity is located in the anterior portion of the body and the mediastinum.