Topic 11: Muscular System - How Muscles Produce Movement Flashcards
1
Q
What are 3 ways that muscles produce movement?
A
- Pulling on a bone when they contract
- Using group action
- Lever systems
2
Q
When pulling on a bone to contract, what are 2 ways?
A
- origin
- insertion
3
Q
What is origin of the bone?
A
- attachment of tendon to stationary bone
4
Q
What is insertion of bone?
A
- attachment of tendon to moveable bone
5
Q
What are three ways of muscles using group action?
A
- Agonist
- Synergists
- Antagonist
6
Q
What is agonist movement?
A
- major muscle producing movement
7
Q
What is synergist movement?
A
help the agonist action and prevent undesirable motions caused by agonists
8
Q
What is antagonist movement?
A
- produces opposite action of agonist
- contraction inhibited when agonist contracts
9
Q
What are lever systems?
A
- bone/muscle interaction at a joint
10
Q
What are the four parts of a lever system?
A
- levers
- fulcrum
- effort
- resistance
11
Q
What are levers?
A
bone
12
Q
What is the fulcrum?
A
joint
13
Q
What is effort?
A
- contraction of agonist
14
Q
What is resistance?
A
opposes movement
15
Q
How do we produce movement in lever systems?
A
- effort must be greater than resistance
