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What determines a muscle’s power and range of motion?
Fascicle arrangement (fiber direction and pattern).
What are the 5 main fascicle arrangements?
Circular, convergent, parallel, fusiform, pennate.
Example of a circular muscle?
Orbicularis oris
Example of a convergent muscle?
Pectoralis major.
Example of a parallel muscle?
Sartorius
Example of a fusiform muscle?
Biceps brachii.
Example of a pennate muscle?
Rectus femoris.
Which fascicle type has greater movement range?
Long fibers (parallel, fusiform).
Which fascicle type produces greater power?
Pennate muscles (more fibers per area).