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60 Cards in this Set
- Front
- Back
What are the five functions of bones?
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Protect, Support, Store calcium, site of blood cell production and an anchor
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What are the 4 classifications of bones
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Long, Short, Flat and irregular
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Diaphysis
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Elongated shaft of a long bone
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Epiphysis
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`the end of a long bone, attached to shaft
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Periosteum
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Double layered connective tissue that covers and nourishes the bone
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Osteoclasts
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large cells that reabsorb/break down bone matrix
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osteoblasts
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bone forming cells
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edosteum
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connective tissue that covers the trabeculae of spongy bone cavity's and lines canals that pass through
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compact bone
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appears very dense but has many canals and passage ways that serve as conducts for nerves, blood vessels and lymphatic vessels
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spongy bone
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consists of trabeculae , looks poorly organized but is actually aligned precisely along the lines of stress
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steps of bone repair due to a fracture
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hematoma formation, fibrocartilage callus formation, bony callus formation, remodel
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3 classifications of joints
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Synarthros: immovable joints
amphiarthroses: slyghtly movable joints diarthroses: freely movable joints |
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fibrous joints
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bones joined by fibrous tissue , no cavity
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sutures
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seams, occur only in the bones of the skull
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sydesmoses
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fibrous joint where bones are connected by a chord or sheet of fibrous tissue
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gomphoses
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peg in socket formation (fibrous joint)
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cartilaginous joints
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articulating bones joined by cartilage
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synchondroses
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bar/ plate of hyaline cartilage unites bones
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symphyses
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surfaces of bones are covered with hyaline cartilage
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sinovial joints
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fluid containing joint cavity
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bursae
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flat sacs lined with synovial membrane "ball bearing"
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ligaments
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help direct bone movement and prevent undesirable motion
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Gliding movement of synovial
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flat surface glides or slips over another similar surface
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angular movement of synovial
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change increase or decrease the angle between two bones
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flexion movement of synovial
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bending movement that decrease the angle of the joint
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extension movement of synovial
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bending movement that increases the angle of the joint
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Foot dorsiflexion
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move towards shin
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Plantar flexion of foot
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pointing of toes
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abduction
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move away from the mid line
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adduction
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moving toward inline
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rotation
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turning bone on its own axis
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supination
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radius and ulna are parallel
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pronation
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radius rotates over ulna
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Plane Synovial joints
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articular surfaces are flat
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Hinge Synovial joints
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convex or cylindrical projection of one bone
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Pivot Synovial joint
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uniaxial rotation of one bone around its own long axis
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condyloid synovial joint
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oval articular surface of one bone fits into complementary concavity in another
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Saddle Synovial joint
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resemble a condyloid, but allow more movement
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Ball & Socket Synovial joint
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sphere of one fits into socket of another
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3 commen joint injuries
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sprain: ligaments reinforcing joint are ripped/stressed
cartilage: mainly tearing of knee meniscus, growth plate fissures dislocation: bones are forced out of normal position |
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Bursitis
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inflamation of a bursa
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Tendonitis
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inflamation of tendon sheaths
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arthritis
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inflammatory/ degenerative disease that damage joints
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osteoarthritis
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degenerative joint disease
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Rheumatoid Arthritis
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bodies immune system attacks its own tissue
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When is the parathyroid hormone released
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When blood calcium levels begin to drop below homeostatic levels. It causes calcium to be released from bones
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What are Osteocytes
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Mature bone cells that maintain bone in a viable state.
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What are Oseoblasts
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Immature bone cells , matrix depositing
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What is Calcitonin
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Causes blood calcium to be deposited in bones as calcium salts
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Osteoclasts
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Bone cells that liquefy bone matrix and release calcium to the blood
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Simple fracture
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Bone is broken cleanly, ends do not penetrate skin
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Spiral fracture
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bone breaks from twisting forces
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Greenstick fracture
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bone splinters but doesn't complete
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Comminuted fracture
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the bone is crushed
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Compound fracture
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bone ends penetrate through skin
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Impacted fracture
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broken end are pushed into eachother
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Depressed fracture
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common skull fracture
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Nonsurgical realignment of broken bone
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closed reduction
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surgical realignment of broken bones
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open reduction
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True/False A hematoma usually forms at the fracture site
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true
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