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BIO 2273 Practical 3
| Question | Answer |
|---|---|
| What is a muscle origin? | site of bony attachment that is the more stationary end |
| What is a muscle insertion? | bony attachment that is more movable |
| Which is considered the more stationary end? the origin or insertion of a muscle? | The origin |
| Which is considered the more movable end? the origin or insertion of a muscle? | The insertion |
| How are muscles named? | by location, size, shape, action, attachment, number of origins, or direction of fibers |
| What are the 3 connective tissue sheaths that make up a muscle? | the epimysium, the perimysium, and the endomysium |
| What are the 4 roles that a muscle can be/have? | agonist, antagonist, synergist, fixator |
| Describe an agonist | muscle primarily responsible for the action (movement) |
| Which functional category for the various roles of muscles is the prime mover? | agonist |
| Describe an antagonist | muscles responsible for action in the opposite direction of an agonist or for resistance to an agonist |
| Describe a synergist | muscle that assists an agonist, often by supplementing the contraction force |
| Describe a fixator | special type of synergist muscle; muscle contraction will stabilize a joint so another contracting muscle exerts a force on something else. |
| Which functional category of the various roles of muscles is a special type of synergist? | fixator |
| an the role of a muscle change? | Yes, it can be an agonist or antagonist depending on movement |
| Define an aponeurosis | thin sheath of connective tissue that helps connect your muscles to your bones |
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jannawhite2998
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