In the human body, there are two different types of marrow that are present. Red marrow contains blood stem cells and these blood cell stems then become platelets, white blood cells(WBC), and red blood cells (RBC). The red marrow is found at the ends of bones and is called the spongy bone. The yellow marrow is found at the center of most of the bones and it has a lot of blood vessels too. Hence, Spongy bone and bone marrow are not the same. Bone marrow is found in the spongy bone located at a specific location.