2 years ago

What is a good example of first-class lever system in the body?

2 answers:

4 0

An example of a first class lever in the human body is the head and neck during neck extension. The fulcrum (atlanto-occipital joint) is in between the load (front of the skull) and the effort (neck extensor muscles). The muscles are attached to the posterior part of the skull to allow for the greatest effort arm.

deff fn [24]2 years ago

4 0

Answer:

An example of a first class lever in the human body is the head and neck during neck extension

Explanation:

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