Bone Marrow - 2
Formation:
Bone
cavity formed by:
Mesenchyme
invades cavity and differentiates into three cell lines:
Reticular
cells
Resorption
of cartilage
Adipose
cells
Resorption
of endosteal bone
Hematopoietic
cells
Up
to age 5-7 years red marrow exclusively
After
5-7 years fat appears in long bones