Multiple Choice
Which fascicle arrangement is most well suited to a muscle that needs to generate a lot of force over a small distance?
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10. Muscles
Fascicle Arrangements
Multiple Choice
Sphincters have a __________ arrangement of fascicles.
A
circular
B
pennate
C
parallel
D
convergent
Verified step by step guidance1
Understand the structure and function of sphincters in the human body. Sphincters are circular muscles that control the passage of substances by opening and closing.
Recognize that the arrangement of muscle fascicles (bundles of muscle fibers) determines the shape and function of the muscle.
Identify the different types of fascicle arrangements: circular, pennate, parallel, and convergent.
Circular arrangement: Fascicles are arranged in concentric rings, typical of sphincters, which control openings and closings in the body.
Conclude that sphincters have a circular arrangement of fascicles, as this structure allows them to effectively open and close passages.
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