Question

Yellow bone marrow is found especially in the medullary cavity of
(a)Long bones
(b)Spongy bones
(c)Short bones
(d)All of the above

Answer 1

Hint: The yellow bone marrow is present especially in the medullary cavity of bones of arms and legs. This cavity is present in the central cavity of these bones. Yellow bone marrow provides the sustenance as well as a right environment that bones need to function.

Complete answer:
-Long bones contain the yellow bone marrow in their medullary cavity.
-Yellow bone marrow functions in the storage of fats.
-Adipocytes are the cells of yellow bone marrow that store fats.
-This fat is used as a source of energy.-
-Yellow bone marrow also contains mesenchymal stem cells which can develop into bone, fat, cartilage, or muscle cells.

Additional Information: -Bone marrow is soft, gelatinous tissue that fills the medullary cavities which is present in the centers of bones.
-Yellow bone marrow is generally surrounded by a layer of red marrow with long trabeculae within a sponge-like reticular framework.
-Mesenchymal stem cells are also called multipotent stromal cells.
-Yellow bone marrow has poor vascular supply.
-Over a time, the yellow bone marrow starts to replace red bone marrow.So, most of the bones in adults consist of yellow bone marrow.

So,the correct statement is ‘long bones’.

Note: -The higher number of fat cells give the color of yellow marrow as yellow.
-Yellow bone marrow is composed of hematopoietic tissue that later becomes inactive.
-A bone marrow transplant is used to replace diseased and non functioning bone marrow in diseases like sickle cell anemia, aplastic anemia, and leukemia.