What percentage of tissue located in the bone marrow cavities of adults is fat?A. 10%B. 25% C. 50% D. 75%
The correct answer is A
The correct answer is A. 10%.
The bone marrow is responsible for producing blood cells, including red blood cells, white blood cells, and platelets. There are two types of bone marrow: red bone marrow and yellow bone marrow.
Red bone marrow is found primarily in the flat bones, such as the ribs, sternum, pelvis, and skull, as well as in the ends of long bones. It is composed mainly of hematopoietic tissue, which is responsible for the production and maturation of blood cells. Red bone marrow contains a high percentage of blood-producing cells and has a deep red color.
Yellow bone marrow, on the other hand, is found mainly in the central cavities of long bones. It is composed primarily of adipose (fat) tissue and contains fewer blood-producing cells. Yellow bone marrow has a yellow color due to the high presence of fat cells.
In adults, the percentage of adipose tissue (fat) in the bone marrow cavities is approximately 10%. This means that only a small portion of the bone marrow is composed of fat cells, while the majority is dedicated to blood cell production. This balance between hematopoietic tissue and adipose tissue is important for maintaining the function of the bone marrow in producing and regulating blood cells.
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