Cyrtomium falcatum. 1  Aptly named, Japanese holly fern produces fronds that do indeed resemble holly leaves with their glossy, deep green leathery appearance. 2  It needs moist but well-drained soil in a protected location to thrive. 3  It also makes for a good houseplant in climates where it isn't hardy.
A baseball bat is a third-class lever because the fulcrum is on the  end of one side, the effect force is in the middle, and the  resistant force, the load, is at the top.
In both the atlanto-occipital and elbow joints, the first class lever system is designed to increase the speed of the system at the cost of muscle strength. Small contractions of the trapezius muscle in the neck pull on the occipital bone of the skull, causing it to pivot at the atlanto-occipital joint.