Question

What is the relationship between brain size and face size in most primates? How does this relationship relate to the cranial base angle and degree of cranial base flexion?

Answer 1

o the animal Kingdom, Jarain Receng body skite this common scaming prindeple م حمد مل لند بیلمم هل Answer: scross the anem are increases with increastnom, brain size howeve ratios differ from one tanonan g ht to another on primates folcnample the brain of apes are generally larger relative to body weight than the brains of monkeys wreleas brains of monkeys are charger than those of ferosimians. - Among primates, recatine krain size (corrected for body weight) is greater in species that alle fruit -eating es omini rerous than in species that eat leaves → Species that feed on fruit may face special problems in Marming and memory because they depend on widely spaced food that is Chemeral in both Espace and time → Noue, the hypothesis that variation un craniofacial shake within and among species is unfrienced by spatial packing has a long history in comparative anatomy, particularly in terms of primates. This study develops and tests three alternatine Amodels of spatial packing to address chove and is infuenced and to what untent the cranial kase angle is influenced as by vaseation in brain and facial size

the models are tested using mouse streins with different mutattons affectiva craniofacial growth Altough nice hand distinctive crania with email Ilains, long faces and retreftened cranial bases the results of the study indicate that seus ( the mouse cranial base frenes to accomodate larger brain size relatius to cranial teases, the results of the study length length.. In addition, the mouse usar bare also entends, but to a lesser degree, to accomodate larger face size relative to cranial kase length ... In addition, interactions between brain size, face size, and the wiatus and the lenguns of the components of the cranial kase account for a large percentage of variation in cranial kase angle! the results illustrate the deque to which the cranial base is sentrally embedded withen the covariation estructure of the craniofacial complen as a whole.