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EXSC 240
Musculoskeletal and Nerve Trauma
26
Other
Undergraduate 3
03/19/2017

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Term
Mechanical injury:
Definition
results from force or mechanical energy that changes state of rest or uniform motion of matter
Term
Load:
Definition
external force acting on the body causing internal reactions within the tissues
Term
Stiffness:
Definition
ability of a tissue to resist a load
Term
Stress:
Definition
internal resistance to a load
Term
Strain:
Definition
internal change in tissue resulting in deformation
Term
Yield point:
Definition
point at which elasticity is almost exceeded is the yield point
Term
Tension:
Definition
force that pulls and stretches tissue
Term
Compression:
Definition
force that results in tissue crush- two forces towards one another
Term
Shearing:
Definition
force that moves across the parallel organization of tissue
Term
Bending:
Definition
combination of tension and compressive forces
Term
Torsion:
Definition
twisting in opposite directions from opposite ends
Term
Cortical bone:
Definition
-"compact"
-can withstand greater stress but less strain
Term
Trabecular:
Definition
-"spongy"
-can undergo more strain before fracturing
Term
Ossification:
Definition
formation of bone by the activity of osteoblasts and osteoclasts and the addition of minerals and salts
Term
Avulsion:
Definition
separation of bone fragment from cortex via pull of ligament or tendon
Term
Irritability:
Definition
ability to respond to stimulation
Term
Contractibility:
Definition
ability to generate tension and shorten
Term
Extensibility:
Definition
ability to stretch beyond resting length
Term
Elasticity:
Definition
ability to return to resting length after stretch
Term
Clonic:
Definition
alternating involuntary muscular contractions and relaxations in quick succession
Term
Tonic:
Definition
rigid contraction that lasts a period of time
Term
Tendinitis:
Definition
inflammation of the tendon
Term
Crepitus:
Definition
sticking of tendon due to inflammatory by-products on irritated tissue
Term
Atrophy:
Definition
wasting away of muscle due to immobilization, inactivity, or loss of nerve functioning
Term
Bursa:
Definition
fluid filled sacs that develop in areas of friction
Term
Neuropraxia:
Definition
interruption in conduction through nerve fiber
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