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HB: Chapter 5

TermDefinition
Bone A matrix of non-living extracellular crystals of calcium and living osteocytes.
Osteon Rings of osteocytes arranged in a cylinder.
Osteocyte An embedded osteoblast within the matrix it has secreted.
Central Canal Pathway for blood vessels to pass into bone, delivering nutrients to osteocytes.
Ligament Connective tissue, dense and fibrous. Connects bone to bone.
Cartilage Elastic substance that contains fibers of collagen and water. Smooth and flexible, it absorbs pressure at joints and allows for smooth movement.
Osteoblast Cell that builds bone material.
Osteoclast Cell that remodels and repairs bone cells.
Osteoporosis Complication where bone loses a great deal of mass leaving it 'pourous' and weakened.
Axial Skeleton Skull, sternum, ribs and vertebral column.
Appendicular Skeleton Bones of arms, legs and their attachments to the trunk.
Synovial Joint Free movable joint separated by a thin fluid-filled space.
Tendons Connective tissue that joins muscle to bone.
Abduction Movement of a limb away from the body midline.
Adduction Moment of a limb toward the body midline.
Circumduction Movement of a limb in a cone shape rotation.
Rotation Movement of a limb around its own axis.
Flexation Movement that deceases the angle of the joint.
Extension Movement that increases the angle of the joint.
Supination Rotation of the forearm so the palm faces anteriorly.
Pronation Rotation of the forearm so the palm faces posteriorly.
Created by: dmainvil