john frere was the scientist that expanded the use of relative bone lengths to a more reliable method.
john frere was the scientist that expanded the use of relative bone lengths to a more reliable method.
who was the scientist that expanded the use of relative bone lengths to a more reliable method?
john frere
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biarticular muscles can fulfill a range of functions during movement. by contracting isometrically (without changing length), they put the joint into a four-bar linkage, allowing the contraction of muscles at one joint to move the other by a fixed amount. unlike four-bar linkages in which all elements are bone and angle relationships are fixed by the relative bone lengths, the biarticular muscle can hold the joint at many different lengths, creating a range of four-bar properties as needed.
biarticular muscle