Multiple Choice
Muscles with parallel fascicle arrangement tend to shorten a great deal upon contracting; thus, these types of muscles tend to be very powerful.
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10. Muscles
Fascicle Arrangements
Multiple Choice
In fascicle arrangements, in which direction do oblique muscle fibers run relative to the muscle’s long axis (tendon)?
A
At an angle to the muscle’s long axis
B
Parallel to the muscle’s long axis
C
In concentric circles around a central opening
D
Perpendicular to the muscle’s long axis
Verified step by step guidance1
Understand that fascicle arrangements describe the orientation of muscle fibers relative to the muscle's long axis, which is typically aligned with the tendon.
Recall that muscle fibers can be arranged in different patterns: parallel, circular, or oblique, each affecting the muscle's function and force generation.
Identify that in parallel arrangements, fibers run exactly parallel to the muscle's long axis (tendon), allowing for greater shortening but less force.
Recognize that in circular arrangements, fibers are arranged in concentric rings around an opening, such as in sphincter muscles.
Note that oblique muscle fibers run at an angle to the muscle's long axis, which allows for more fibers in a given area and thus greater force production, but less shortening.
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