Bones Flashcards
(42 cards)
Compact bone is able to withstand compressive and twisting forces due to:
The arrangement of collagen fibres in repeating osteons
What covers most of the outer surface of a long bone?
Periosteum
What are Trabeculae?
The small flat pieces of bone that make up spongy bone
The structural unit of compact bone
Osteon
The bone cell that produces the bony matrix
Osteoblast
What produced red and white blood cells?
Red bone marrow
As bone density decreases with age, what cell is primarily decreasing?
Osteoblast
What structure plays the most important role in appositional growth of long bones?
Periosteum
Appositional Growth
Defintion
Widening of Bone
Interstitial Growth
Lengthening of Bone
Makes bone more slightly flexible?
Collagen Fibres
Thin membrane covering the outer layer of bone and contains bone cells
Periosteum
Contains collagen fibres and calcium phosphate crystals
Lamellae
Thin membrane covering the inner surfaces of bone and contains bone cells
Endosteum
Found in spongy bone and responsible for the production of red and white blood cells
Red Bone Marrow
Allows bone to withstand force from all directions
Trabeculae
Responsible for making bone hard
Calcium Phosphate Crystals
Provides protection for articulating surfaces
Articular Cartilage
Fat stores in medullary cavity of long bones
Yellow Bone Marrow
Allows compact bone to withstand compressive force
Osteons
Identify Structure 1.
Lamellae
Identify Structure 2.
Osteon
Identify Structure 3.
Trabeculae
Identify Structure 4.
Haversian Canal