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Multiple Choice
Which of the following best describes a bipennate pattern of fascicles in muscle tissue?
A
Fascicles are arranged on both sides of a central tendon.
B
Fascicles run parallel to the long axis of the muscle.
C
Fascicles are arranged in a circular pattern around an opening.
D
Fascicles converge from a broad area to a single tendon.
Verified step by step guidance
1
Understand the term 'bipennate pattern of fascicles' in muscle tissue. Fascicles are bundles of muscle fibers, and their arrangement determines the muscle's function and appearance. In a bipennate pattern, fascicles are arranged on both sides of a central tendon, resembling a feather.
Review the options provided in the question. Each option describes a different fascicle arrangement: parallel, circular, convergent, and bipennate.
Eliminate incorrect options by comparing their descriptions to the definition of a bipennate pattern. For example, 'Fascicles run parallel to the long axis of the muscle' describes a parallel arrangement, not bipennate.
Similarly, 'Fascicles are arranged in a circular pattern around an opening' refers to a circular arrangement, and 'Fascicles converge from a broad area to a single tendon' describes a convergent pattern. These do not match the bipennate description.
Select the correct answer: 'Fascicles are arranged on both sides of a central tendon,' as this best matches the definition of a bipennate pattern of fascicles in muscle tissue.