Question

choose the correct statements regarding types of levers. check all that apply. check all that apply a first - class lever is one with the fulcrum in the middle. a second - class lever has the resistance in the middle. a second - class lever occurs at the atlanto - occipital joint of the neck, where the muscles of the back of the neck pull down on the occipital bone of the skull and oppose the tendency of the head to tip forward. in a third - class lever, the effort is applied between the fulcrum and resistance. most musculoskeletal levers are first - class levers.

Explanation:

In lever - type classification:

• First - class levers have the fulcrum between the effort and resistance.
• Second - class levers have the resistance between the fulcrum and effort.
• Third - class levers have the effort between the fulcrum and resistance.

The atlanto - occipital joint is a first - class lever. Most musculoskeletal levers are third - class levers.

Answer:

A. A first - class lever is one with the fulcrum in the middle.
B. A second - class lever has the resistance in the middle.
D. In a third - class lever, the effort is applied between the fulcrum and resistance.