Lengthwise, long bone growth during infancy and youth is exclusively through ________.
A) interstitial growth of the epiphyseal plates
B) calcification of the matrix of the zone underlying articular cartilage
C) the secretion of bone matrix into the medullary cavity
D) differentiation of osteoclasts into osteocytes

Question

Quizplus · Accepted Answer

During infancy and youth, lengthwise long bone growth occurs exclusively through interstitial growth of the epiphyseal plates, which are areas of hyaline cartilage that separate the epiphyses and diaphyses of long bones. As these plates continue to undergo mitosis, the cartilage is transformed into bone tissue, resulting in an increase in bone length.

Lengthwise, Long Bone Growth During Infancy and Youth Is Exclusively