The tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color.

To fill with, or as with, marrow or fat; to glut.

soft, spongelike material in the cavities within bone; red marrow produces blood cells; yellow marrow is formed mainly of fatty tissue and has no blood-producing function

A soft highly vascular modified connective tissue that occupies the cavities and cancellous part of most bones.