LP2 - Muscle actions & interactions
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17 Terms
what are the 3 functional groups of muscles?
prime mover (agonist), antagonist, synergist
what group of muscles have major responsibility for producing specific movement?
prime mover (agonist)
what group of muscles oppose or reverse a particular movement?
antagonist
what group of muscles help prime movers, add extra force, and reduce unnecesary movement?
synergist
what group of muscles is a synergist that immobilizes a bone/muscle’s origin to create a stable base?
fixator
what fascicle shape are concentric rings?
circular
what fascicle shape have a broad origin and fascicles converge toward a single tendon insertion?
convergent
what fascicle shape have parallel fascicles to long axis of straplike muscle?
parallel
what fascicle shape have spindle shaped muscles with parallel fibers?
fusiform
what fascicle shape have short fascicles that attach obliquely to central tendon running length of muscle?
pennate
what type of pennate fascicles attach only to one side of tendon?
unipennante
what type of pennate fascicles insert from opposite sides of tendon?
bipennate
what type of pennate fascicles appear as feathers inserting into one tendon?
multipennate
what fascicle shape is orbicularis oris?
circular
what fascicle shape is pectoralis major?
convergent
what fascicle shape is sartorius
parallel
what fascicle shape is biceps brachii
fusiform