A cell found in bones that builds bone tissue by secreting collagen into bone tissue spaces; the collagen binds to calcium and forms the tough tissue within bones.
A cell found in bones that secretes hydrochloric acid that breaks down bone the bonds between calcium and collagen; the calcium is released from bone.
The process bones constantly undergo of taking away and building tissue; is controlled by mechanical stress and hormonal negative feedback loops.
The process of maintaining a stable internal environment.
A hormone that is secreted by the parathyroid glands that activates osteoclasts when our blood calcium levels are too low.
A hormone that is secreted by the thyroid gland that lowers osteoclast activity in proportion to osteoblast activity.