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Muscular System, Abundis Julie (Disorders (fibromyagia, hernia, myalgia,…
Muscular System, Abundis Julie
Major Functions
characteristics
excitability/responsiveness
contractility
extensibilty
elasticity
produce movement
maintain posture and body position
stabilize joints
generate heat
Names Of Muscles
frequency of stimulation
number of muscle fibers
size of muscle fibers
degree of muscle stretch
Muscle Tissues
skeletal
have striations
voluntary muscle
responsible for overall body mobility
cardiac
only in heart
involuntary
striated
smooth
found in walls of hallow organs
force fluids and other substances through internal body
visceral
nonstriated
involuntary
Body Movement
Contraction
sliding filament theory
sarcolemma
myofibrils
thick filaments (myosin)
thin filaments (actin)
during contraction filaments slide past each other
aerobically
anaerobically
Disorders
fibromyagia
hernia
myalgia
myofascial painsyndrome
spasm
strain
Skeletal muscle structure
rich blood supply
contracting muscles
connective tissue sheaths
epimysium
perimysium
fasicles
endomyium
attachments
origin
insertion
direct
indirect
tendon