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30 Cards in this Set

  • Front
  • Back
Periosteum
Double layered protective membrane
Endosteum
Delicate membrane covering internal surfaces of bone
haversian System
The structural unit of compact bone
Lamella
Central channel containing blood vessels and nerves
Volkmann's Cannals
At right angles to central canal connecting blood and nerve supply of the periosteum to the Haversian
Osteocytes
Mature bone cells
Lacunae
Small cavities in bone that contain osteocytes
Canaliculi
Hairlike canals that connect lacunae to each other and the central canal
Osteoblasts
Bone forming cells
Osteocytes
Mature Bone cells
Osteoclasts
Large cells that resorb bone
Osteoid
Unmineralized bone matrix
Hydroxyapatites
Mineral salts, calcuim phosphate
Osteogenesis and Ossification
Process of bone tissue formation
Intramembranous Ossification
Bone forms from a fibrus membrane
Endochondral Ossification
Bone forms by replacing hyaline cartilage
Articulation
Site where two or more bones meet
Three structural types of joints
Fibrous, Cartilaginous, Synovial
Three functional types of joints
Synarthroses, Amphiarthroses, Diarthroses
Fibrous structural joints
joined by fibrous tissue, no joint cavity, immovable
Gomphoses
Peg in socket joint between tooth and its alveolar socket
Cartilaginous joints
articulating bones joined by cartilage, lack a joint cavity
Cartilaginous joints symphyses
Hyaline cartilage covers the surface of bone and is fused to an intervening pad of fibrocartilage
Synovial joints
Joints where bones are sparated by a fluid filled cavity
Flexion
Bending movment that decreases the angle of the joint
Extension
Joint angle is increased
Dorsiflexion
Up and dpwn movement of the foot, Plantar flexion
Adduction
Movement towards the midline
Abduction
Movement away from the midline
Circumduction
Movement describes a cone