Chapter 6: Bone/ Osseus Tissue Flashcards
Osteo-
Bone
The shaft of a bone
Diaphysis
The ends of a bone
Epiphysis
What covers the ends of moveable bones?
Articular cartilage aka hyaline cartilage
Fibrous membrane that covers the outer portion of a bone
Periosteum
Medullary cavity
Space inside a bone that contains bone marrow
The lining of the Medullary Cavity
Endosteum
Epiphyseal plate
Area that contains hyaline cartilage in growing bones.
Causes elongation of the bone and becomes ossified with age
What is an osteoblast?
Cells that lay down collagen fibers and matrix to form bone.
What is an osteoclast?
Bone dissolving cells. Help maintain blood calcium levels when they are low by dissolving bone into the bloodstream
What is an osteocyte?
A mature osteoblast which originally comes from an osteogenic cell.
What is matrix made of?
Mostly hydroxyapatite which is a calcium phosphate salt, and some calcium carbonate (which is chalk)
Organic portion is mostly collagen
Densely packed bone that is usually located on the outer diaphysis
Compact bone
The basic structural unit of compact bone
Osteon
What are the 5 parts of a compact bone?
- Central canal
- Concentric lamellae
- Lacuna
- Canaliculi
- Perforating canal