Lengthening of long bones in humans occurs in a particular area of the bone. This area is called the: a) medullary canal b) cancellous bone c) periosteum (pron: per-E-ahs-tee-em) d) epiphysis (pron: eh-pif-eh-sis)
option d. The epiphyseal plate is the region of elongation in an extended bone. It consists of a layer of hyaline cartilage in which ossification can keep to arise in immature bones.