Muscle Atrophy. Weakness or wearing away of body tissues and structures. · Supination. The act of rotating the arm or the leg so that the palm of the hand, or ...
What is the structure of the human body?
- The human body is a marvel of structure and function made from billions and billions of cells. These cells combine to form tissues, such as muscle and connective tissue. Tissues, in turn, combine to form organs.
What type of tissue forms linings of the body?
- Most epithelial tissues form internal and external linings of the organs of the body. However, some epithelial tissue forms vital glands. The epithelium forming linings or coverings typically consist of one or more layers of cells (FIGURE 1-2).
What is the connective tissue in the stomach wall?
- Just beneath the epithelial lining is a layer of connective tissue that joins or connects the epithelial layer to the next layer, a thick sheet of smooth muscle cells. It forms the bulk of the stomach wall. Nerves enter with the blood vessels and control the flow of blood in the stomach.
Why don't blood vessels in underlying connective tissue penetrate the epithelium?
- Blood vessels in underlying connective tissue do not penetrate the basement membrane to reach the epithelium; thus, all gases and nutrients carried in the blood must reach the epithelium by diffusing from blood vessels with many layers of cells, the most metabolically active cells are close to the basement membrane, 6.
Adhesions can form in muscles, or in internal organs, as the result of injury or surgery. means a weakness or wearing away of body tissues and structures.