Lab Quiz 6 Material (03/13/2025) Flashcards
The cartilage cells of this zone have not yet begun to participate in the growth of the bone; thus, they are reserve cells. These cells are small, usually only one to a lacuna, and not grouped. At some point, some of these cells will proliferate and undergo the changes outlined for the next zone.
What is the Zone of Reserve Cartilage?
The cells of this zone undergo divisions and are increasing in number; they are slightly larger than the chondrocytes in the zone of reserve cartilage and are close to their neighbors; they begin to form rows.
What is the Zone of Proliferation?
The cells of this zone are aligned in rows and are significantly larger than the cells in the preceding zone.
What is the Zone of Hypertrophy?
In this zone, the cartilage matrix is impregnated with calcium salts. The calcified cartilage will serve as an initial scaffold for the deposition of the new bone. Chondrocytes positioned in the more proximal part of this zone undergo apoptosis.
What is the Zone of Calcified Cartilage?
This zone is represented by eroded cartilage that is in direct contact with the connective tissue of the marrow cavity. Small blood vessels and accompanying osteoprogenitor cells invade the region previously occupied by the dying chondrocytes.
What is the Zone of Resorption?
