10 Questions
What is an example of a first class lever in the human body?
The neck when raising the head
In a second class lever, where is the fulcrum located?
At one end
Which muscle is the effort in the second class lever example of the ankle?
Gastrocnemius (calf muscle)
What is an example of a second class lever in the human body?
The ankle when a person's weight is going through the middle
When does a sprinter use a second class lever in the human body?
When exploding out of the blocks in a race
In a third class lever, where is the load (resistance) located?
At the other end from the fulcrum
What is an example of a third class lever in the human body?
Bicep curl
What is the role of the gastrocnemius in the second class lever example of the ankle?
To apply the effort to produce plantar flexion of the foot
What type of lever is involved when the neck muscles are used to raise the head?
First class lever
How is the ankle joint involved in the second class lever example of the ankle?
It is moved to plantar flexion by the gastrocnemius
Test your knowledge of first and second class levers with examples such as the neck raising the head and the ankle as a second class lever. Understand the placement of fulcrum, effort, and load/resistance in each type of lever.
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