The Movement System Podcast CSCS Prep: Muscle Structure and Function + CSCS Practice Questions
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Jul 15, 2022 Exploring muscle activation and muscle structure, this episode covers detailed topics like motor units, sliding filament theory, and muscle anatomy. Practice questions for CSCS exam are included for effective learning.
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Muscle Architecture Affects Force And Length
- Muscle architecture (fusiform vs. pennate) changes fiber angle and packing density, affecting force and length.
- Pennate muscles pack more fibers for greater cross-sectional force while fusiform muscles favor longer excursion.
Motor Unit Size Matches Movement Precision
- Motor unit size varies by muscle function: fine-control muscles have many small units, large force muscles have fewer large units.
- Bigger muscles typically contain motor units with more fibers and less fine precision.
Memorize Connective Tissue Layers
- Remember the connective tissue layers: epimysium around the whole muscle, perimysium around fascicles, endomysium around fibers.
- Use those layer names to localize structure when answering anatomy or CSCS exam questions.