Scelta multipla
In terms of fascicle arrangements, in which direction do oblique muscle fibers run relative to the muscle’s midline?
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10. Muscles
Fascicle Arrangements
Scelta multipla
Sphincters have a __________ arrangement of fascicles.
A
circular
B
pennate
C
parallel
D
convergent
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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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