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8 Cards in this Set

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Which bones of the body develop by endochondral ossification?
Pretty much everything below the skull, with the exception of the clavicle.
What feature of endochondral ossification is ALWAYS at the beginning of the process?
Formation of the hyaline cartilage "template".
After the hyaline cartilage model is created, how does the bone begin to grow?
By interstitial (growth by length) and appositional growth (growth by width), from the center of the bone.
What are the zones of bone growth by length?
Zone of resting cartilage.
Zone of proliferating cartilage.
Zone of hypertrophic cartilage.
Zone of calcified cartilage.
When does bone growth stop?
Depends on the bone. Key is the cartilage. Bone and cartilage grow at the same time. When bone growth overcomes cartilage, and cartilage is completely consumed, growth stops. [Rachel noted that this is a good trick question!]
What is the name of the zone of hyaline cartilage that is analogous to the basement membrane of the dermis?
Zone of resting cartilage. Resting because cells do not function in bone growth. They anchor the epiphyseal plate to the epiphysis of the bone.
What is the name of the tissue that anchors to the zone of resting cartilage?
Zone of proliferating cartilage. These cells divide to replace those that die at the diaphyseal side of the epiphseal plate.
During bone growth, what zone consists of large, maturing chondrocytes arranged in columns?
Zone of hypertrophic cartilage.