The periosteum, a layer of dense connective tissue, surrounds the bone. Zoom out twice. Mouse-over to find the periosteum, bone and bone marrow. Bone marrow fills the cavity inside the bone. Several megakaryocytes are visible.
Megakaryocytes produce platelets by pinching off small cell fragments.
If you wish to spend more time looking at other examples of the structures for this lab the following hyperlinks will take you directly to the object list.