Exact(3)
As an overview, the mouth execution task consisted of manipulating a small plastic object (a garden-type plastic dwarf 2 cm tall) with the lips while keeping the jaw closed, while the hand execution task was to rip a piece of paper or break a peanut with both hands.
They dress it in new clothes and tie the jaw closed.
Instead of whacking his elbows off the table or snapping his jaw closed when he chews, take a more subtle approach.
Similar(57)
Third, during chewing (Gerstner and Goldberg, 1991; Liu et al., 1993; Naganuma et al., 2001), licking (Travers et al., 1997), and suckling (Thexton et al., 1998), the tongue-protruding and jaw-opening muscles are co-active during jaw opening, while tongue-retracting and jaw-closing muscles are co-active during jaw closing.
As the reptile chews, the lower jaw closes between two rows of upper teeth.
For the first component, as the jaw closes, the lips protrude.
Adductor jaw muscles with different mechanical designs must have different contractile properties and/or different muscle activity patterns to coordinate jaw closing.
Cranial muscles for jaw closing pull the mandible around a point of rotation at the jaw joint using a third-order lever mechanism.
Zhang and Goldberg proposed unique parallel-jaw grippers that can align an n-sided polygonal part in the vertical plane as the jaw close [11].
However, it should be noted that even though PPT and PPTol were assessed in two jaw closing muscles, significant differences were only found for the masseter muscle.
This review identifies multiple potential sources including the innate characteristics of the muscle fibers, muscle spindle activation, the architecture of the jaw closing muscles and biomechanical changes that can contribute to the increase in vertical force after lengthening the jaw closing muscles or increasing mandibular height.
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