Podcast
Questions and Answers
What is the law that states the nervous system activates the fewest muscles or muscle fibers possible for a given joint action?
What is the law that states the nervous system activates the fewest muscles or muscle fibers possible for a given joint action?
What is the purpose of the hierarchic recruitment pattern?
What is the purpose of the hierarchic recruitment pattern?
What type of muscle recruitment pattern exists for the elbow extensors?
What type of muscle recruitment pattern exists for the elbow extensors?
What is the role of the anconeus and medial head of the triceps?
What is the role of the anconeus and medial head of the triceps?
Signup and view all the answers
Which muscles control lower level extensor torque for the elbow joint?
Which muscles control lower level extensor torque for the elbow joint?
Signup and view all the answers
Why is the larger, polyarticular, long head of the triceps selected for dynamic or highly resisted extensor torque?
Why is the larger, polyarticular, long head of the triceps selected for dynamic or highly resisted extensor torque?
Signup and view all the answers
What is the downside to using additional muscular forces to neutralize the undesired shoulder extension potential of the long head of the triceps?
What is the downside to using additional muscular forces to neutralize the undesired shoulder extension potential of the long head of the triceps?
Signup and view all the answers
Which muscle is selected for dynamic or highly resisted extensor torque for the elbow joint?
Which muscle is selected for dynamic or highly resisted extensor torque for the elbow joint?
Signup and view all the answers
When are tasks with low-level force demands usually accomplished?
When are tasks with low-level force demands usually accomplished?
Signup and view all the answers
Why does the nervous system activate the fewest muscles or muscle fibers possible for a given joint action?
Why does the nervous system activate the fewest muscles or muscle fibers possible for a given joint action?
Signup and view all the answers
Why are neutralizer muscles necessary for larger polyarticular muscles?
Why are neutralizer muscles necessary for larger polyarticular muscles?
Signup and view all the answers
What type of muscles are often used for tasks with low-level force demands?
What type of muscles are often used for tasks with low-level force demands?
Signup and view all the answers
What type of muscles are recruited as force demands increase?
What type of muscles are recruited as force demands increase?
Signup and view all the answers
What are neutralizer muscles necessary for in larger polyarticular muscles?
What are neutralizer muscles necessary for in larger polyarticular muscles?
Signup and view all the answers
Which muscle controls lower level flexor torque for the elbow joint?
Which muscle controls lower level flexor torque for the elbow joint?
Signup and view all the answers
Which muscle is selected for dynamic or highly resisted flexor torque for the elbow joint?
Which muscle is selected for dynamic or highly resisted flexor torque for the elbow joint?
Signup and view all the answers
What is the principle behind the nervous system activating the fewest muscles or muscle fibers possible for a given joint action?
What is the principle behind the nervous system activating the fewest muscles or muscle fibers possible for a given joint action?
Signup and view all the answers
Study Notes
- The nervous system activates the fewest muscles or muscle fibers possible for a given joint action.
- The law of parsimony states this method of muscle group activation.
- The hierarchic recruitment pattern exists for the elbow extensors.
- The small anconeus and medial head of the triceps control lower level extensor torque.
- The larger, polyarticular, long head of the triceps is selected for dynamic or highly resisted extensor torque.
- This pattern of muscle recruitment makes practical sense from an energy perspective.
- Additional muscular forces would be required to neutralize the undesired shoulder extension potential of the long head of the triceps.
- Tasks with low-level force demands are often accomplished by one-joint muscles.
- Larger polyarticular muscles are recruited as force demands increase.
- Neutralizer muscles are necessary for larger polyarticular muscles.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of muscle activation and recruitment patterns in the human body with this quiz. From the law of parsimony to the hierarchic recruitment pattern, learn about the specific muscles involved in joint actions and the practical reasons behind their activation. Whether you're a fitness enthusiast or a student of anatomy and physiology, this quiz will challenge your understanding of muscle function and energy efficiency. Keywords: muscle activation, recruitment patterns, joint actions, anatomy, energy efficiency.