Study On Human Biology In Mongolian Ordos

The Mongolian people living in the vast grasslands are an important ethnic minority in China and one of the cross-border ethnic groups in China.The earliest people in the Mongolian Ordos does not originate from a certain clan tribe,but were formed by a group of people with special identities and missions.Due to its special identity,the Ordos Department has an important position in the history of the Mongolian people.In September 2014,the research team examined 87 physical anthropological indicators of 336 adults(142 males and 194 females)and 224 cases(92 males and 132 females)25 population genetic phenotypic characteristics of Mongolian students were investigated Mongolian in the Etuoke Banner,Ordos City.The results of the study were as follows:(1)Most people in Ordos have eyefold of the upper eyelid,straight nasalbase,medium thickness of fold,nasalbase level,nasal root height and breadth of alaenasi medium,maximal dimeter of nostrils in oblique and ransverse type,lobe types in round and triangle,brown eyes,well-developed zygomatic projection,narrow heights of male opening height of eyeslits,level of direction ofeyelits,female opening height of eyeslits moderate,and xternal angleshigher than Internal angles.With age grow,the fold rate of eyefold of the upper eyelid increased,Mongoloid folds decreased,upper lip skin became thinner,the fold rate of the level nasalbase increased,and the eyesbecame lighter.The widening rate of the female breadth of alaenasi increased,the opening height of eyeslits become narrow and the direction ofeyelits become internal angle exceed xternal angle.(2)The index classification of the Ordos Department is Brachycephaly(Length-breadthindex of head),metriocephalic(Breadth-height index of head),hypsicephalic(Length-height index of head),mesorrhiny,male is euryprosopy ang female is Mesoprosopy,Long trunk,Broad chest circumference,Medium shoulderbreadth,Narrow distance between iniac crests,short type,male is Mesatiskelic type and female is Subbrachyskelic type,Hypermiddle.(3)The circumference of the Ordos,has a wide chest,a thick thigh and lower leg,a well-developed upper arm,a slender forearm.Male and female body circumference changes regularly with age.The skinfold thickness was the largest in the trunk and the fat development was better than that in the limbs.The skinfold thickness index was correlated with each other.The cheek fold value,body fat,body fat rate increase with age.The development of subcutaneous fat in Ordos is similar to the Chahar Mongolian,Torgud Mongolian and Barag Mongolian,their has the characteristics of Mongolian species North Asia.(4)The average size of males somatotypes in Ordos is 4.7-6.4-1.1,belonging to the Endo.ceeso type.The average size of females somatotypes in 5.9-5.7-1.0,belonging to the Meso.endo type.Body fat content is more,bones and muscles are moredeveloped,and the somatotypes is thicker.(5)Ordos' s Rolling and Pointed,Twisting and Clover-leaf,Pointed and Clover-leaf,Handedness and Leg folding,Handedness and Foot preference,Arm folding and Stride type,Mongoloid fold and Nasal profile,Mongoloid fold and Nostril type,Eyefold of upper eyelid and Chin type,Nasal profile andForehead hair point,Nail type and Toe type 11 pairs of traits existtwotypes of correlation.(6)The characteristics of the Ordos,the more prominent features are wide head and nose,smaller nasal height,narrowerfaceand lower lip,most have Eyefold of the upper eyelid and Mongoloid fold,Brown eyes,Higher height,heavier body shape,BMI is overweight.Ordos compare with other ethnic groups have the characteristics of North Asian type Mongolian species.