Final answer:
Some marrow of long bones is termed "yellow" marrow under normal conditions. The function of yellow marrow is to serves as a site of energy storage, containing fat cells that provide a reserve of energy.
Step-by-step explanation:
The yellow marrow of long bones serves as a site of energy storage, consisting largely of fat cells. It contains adipose tissue, which stores triglycerides that can be used as a source of energy. This function of yellow marrow is important for providing the body with a reserve of energy.
On the other hand, red marrow is responsible for hematopoiesis, which is the production of blood cells. Red blood cells, white blood cells, and platelets are all produced in the red marrow. This process is vital for maintaining a healthy blood cell count in the body.
In summary, yellow marrow stores energy in the form of fat cells, while red marrow produces blood cells through hematopoiesis.