While comparing parallel fiber and pinnate muscles of a given volume, which of the following statements are TRUE?
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- Pinnate muscles provide more muscle force
- Parallel fiber muscles provide more muscle force
- Pinnate muscles facilitate better muscle shortening
- Parallel fiber muscles facilitate better muscle shortening
The Correct Option is A, D
Solution and Explanation
2. Parallel fiber muscles provide more muscle force: - This is incorrect. Parallel fiber muscles have fibers aligned parallel to the tendon, providing more range of motion and allowing for greater muscle shortening, but less force compared to pinnate muscles.
3. Pinnate muscles facilitate better muscle shortening: - This is incorrect. Parallel fibers allow for more efficient shortening because they run parallel to the tendon, whereas pinnate muscles are designed for strength, not shortening.
4. Parallel fiber muscles facilitate better muscle shortening: - Correct. Since parallel fiber muscles align along the tendon, they can shorten more effectively, resulting in a greater range of motion.
Thus, the correct answers are (A) and (C).
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