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Thursday, 28 December 2017

Bone ossification test is conducted to ascertain human

  By GK Planet Team       Thursday, 28 December 2017
Q. Bone ossification test is conducted to ascertain human—

A. Brain efficiency
B. Tentative age
C. Tentative height
D. Drug addiction

Answer: Tentative age

Bone formation, also called ossification, process by which new bone is produced.Ossification begins about the third month of fetal life in humans and is completed by late adolescence. The cartilage cells die out and are replaced by osteoblasts clustered in ossification centres.

Timetable for human ossification

Time periodBones affected
Third month of fetal developmentOssification in long bones beginning
Fourth monthMost primary ossification centers have appeared in the diaphyses of bone.
Birth to 5 yearsSecondary ossification centers appear in the epiphyses
5 years to 12 years in females, 5 to 14 years in malesOssification is spreading rapidly from the ossification centers and various bones are becoming ossified
17 to 20 yearsBone of upper limbs and scapulae becoming completely ossified
18 to 23 yearsBone of the lower limbs and os coxae become completely ossified
23 to 25 yearsBone of the sternum, clavicles, and vertebrae become completely ossified
By 25 yearsNearly all bones are completely ossified
With ossification test of bone tentative age can be ascertained.
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Thanks for reading Bone ossification test is conducted to ascertain human

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