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stucture function
| Question | Answer |
|---|---|
| What is the force exerted by a contacted muscle on an object? | muscle tension |
| Define load | The opposing force exerted on the muscle by the weight of the object |
| Describe Isometric contraction | muscles do not shorten, muscle tension develops but load doesn't move. |
| When the muscle shortens and muscle tension develops and overcomes the load is known as what? | isotonic contraction |
| What is a motor unit? | A motor neuron and all the muscle fibers it innervates |
| What is the motor unit response to a single AP of its motor neuron? | muscle twitch |
| What is a myogram? | a graph of time and strength of a contraction |
| What are 3 phases of muscle contraction? | latent period, period of contraction, relaxation |
| The excitation of muscle coupling and forming cross bridges happens on what phase? | phase 1 latent period |
| when the muscle shortens and cross bridges are active and have enough tension to overcome the load happens on what phase? | phase 2 period of contraction |
| when cross bridges decrease and re entry of calcium into the sr happens in what phase? | phase 3 relaxation |
| What do graded muscle responses do? | control movement |
Created by:
cdixon10
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