Asked by Witchita Kansas on Jun 25, 2024
Verified
Which of the following statements does not accurately describe factors that determine the amount of force generated during a muscle contraction?
A) The number of cross-bridges that can form is higher in a short muscle fiber compared to longer fibers.
B) Muscle fibers that have larger diameters have more myofibrils and therefore can form more cross-bridges.
C) Increasing stimulation of a muscle fiber results in increased formation of cross-bridges.
D) Muscle fibers that are stretched to the optimal length will provide higher numbers of cross-bridges.
Cross-Bridges
The connections formed between actin and myosin filaments in muscle fibers during contraction, allowing the muscle to generate force and movement.
Muscle Fiber
An individual muscle cell, elongated and capable of contracting, that makes up skeletal muscles.
Diameters
Measurements of length through the center of a body or object from one side to the other, indicating its size in a specific direction.
- Outline the elements that influence the magnitude of force produced during muscular contractions.
Verified Answer
AU
Abigail UriosteguiJun 28, 2024
Final Answer :
A
Explanation :
The number of cross-bridges that can form is actually higher in longer muscle fibers compared to shorter ones, because longer fibers have more actin and myosin filaments available to interact and form cross-bridges.
Learning Objectives
- Outline the elements that influence the magnitude of force produced during muscular contractions.