Bone elongation processes at the epiphyseal plate

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✔ https://HomeworkClinic.com • ✔ https://Videos.HomeworkClinic.com • ✔ Ask questions here: https://HomeworkClinic.com/Ask • Follow us: • ▶ Facebook: / homeworkclinic • ▶ Review Us: https://trustpilot.com/review/homewor... • • Interstitial lengthening occurs in only certain bones, primarily those of the appendages. • • Such lengthening takes place at the epiphyseal plate, a layer of hyaline cartilage in the metaphysis of a growing bone. • 1. Zone of resting cartilage. • • Consisting of a hyaline cartilage pad made of inactive chondrocytes, this zone anchors the plate to the epiphysis. • 2. Zone of proliferating cartilage. • • The mitotic proliferation of chondrocytes in this zone pushes the resting cartilage outward, helping to lengthen the diaphysis. • 3. Zone of hypertrophic. • • In this zone, chondrocytes are stimulated to mature and enlarge, helping to lengthen the diaphysis. • 4. Zone of calcified cartilage. • • This thin zone of dying and dead cartilage cells cements the epiphyseal plate to the diaphysis and borders the creation of new bony matrix. • • Osteoclasts remove the calcified cartilage and make way for osteoblasts to build new spongy bone trabeculae. • • proliferation of chondrocytes increases cell number. • • The increased numbers of chondrocytes enlarge, moving the epiphysis away from the diaphysis. This increases the length of the bone. • • The larger amount of dying cartilage tissue is replaced with bone matrix thereby solidifying the resulting elongation.

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