D3 - Getting some leverage Flashcards
What is the role of bones in the lever machine of the body?
Bones are the rigid frame part of the lever machine through which force is transferred.
What provides the axes around which rotation occurs in the body?
The joints of the body provide the axes around which rotation occurs.
What generates the force needed to cause overt movement in the body?
Muscles generate the force (or tension) needed to cause overt movement.
Why are tendons crucial to human movement?
Tendons are crucial because the force produced by a muscle is transmitted to the bone via the tendon
What entities need to be considered when classifying levers?
When classifying levers
What can happen if inappropriate lever configurations are introduced during exercise?
Inappropriate lever configurations can lead to poor technique
How does a first-class lever look
and where does the fulcrum lie?
What is an example of a second-class lever?
A wheelbarrow is an example of a second-class lever where the resistance is in the middle
What is the most common type of lever in the human body?
Third-class levers are the most common type of lever in the human body.
Provide an example of a third-class lever in the human body.
The biceps and elbow represent a recognizable example of a third-class lever in the human body.
What advantage is biased towards in third-class levers?
Third-class levers bias towards an increased range of motion and increased velocity of movement.
During exercises
what is the goal when using the levers of the body?
How does the addition of an external load affect the center of gravity of the body?
Adding an external load
Why is minimizing corrections during movements considered more efficient?
Minimizing corrections during movements is more efficient because fewer and smaller corrections mean better efficiency in balancing the system.
What muscles do we recruit when we want to walk forward?
When we want to walk forward
