An outer layer of Cortical Bone surrounds a spongy bone centre. The pockets within the sponge are filled with Bone Marrow.
The inner bone looks like thick sponge filled with slime
Bone marrow (red)
Bone marrow.
Bone marrow
well bone marrow is a substance that is inside of the bone, so there for bone marrow is part of the skeletal system.
as long as it is inside a living organism then yes
spongy
Bone marrow
Blood cells are produced from bone marrow. This is gel like substance that is located inside the bone.
Bone Marrow is on the inside of our bones and it is there to help produce the three types of blood cells, as well as lymphocytes, which support the immune system. Marrow is a sponge-like texture unlike our actual bones which are hard.
Hydroxylapatite is the mineral substance in bone. It is a calcium compound.
Bone Cells, Collagen Fibers, Ground Substance
The bone marrow. As you look inside of a bone you will see a core of softer material. That material is bone marrow.