Chapter 6 pt 2

Front

What is endochondral ossification?

Back

Endochondral ossification is the process by which bone tissue is created from a cartilage model, primarily involving the transformation of hyaline cartilage into bone.

Front

What is the role of hyaline cartilage in endochondral ossification?

Back

Hyaline cartilage serves as a precursor that is broken down and replaced by bone during the process of endochondral ossification.

Front

What occurs in the proliferation zone of bone growth?

Back

In the proliferation zone, new cartilage cells are formed and pushed upward, which causes the epiphysis to move away from the diaphysis, leading to lengthening of the bone.

Front

What happens in the hypertrophic zone during bone development?

Back

In the hypertrophic zone, cartilage lacunae enlarge and erode, creating interconnecting spaces that contribute to the formation of bone.

Front

What is Paget's disease?

Back

Paget's disease is a condition characterized by excessive and disorganized bone remodeling, leading to bones that grow rapidly but are structurally weak and poorly formed.

Front

What is the primary ossification center?

Back

The primary ossification center is the initial site in the center of the shaft of a long bone where ossification begins during fetal development.

Front

What is the difference between primary and secondary ossification centers?

Back

Primary ossification centers are the first areas where bone formation occurs, typically in the diaphysis, while secondary ossification centers develop later in the epiphyses.

Front

What is the calcification zone in bone growth?

Back

The calcification zone is where the cartilage matrix becomes calcified, leading to the hardening of the cartilage and eventual transformation into bone.

Front

What is the significance of the resting zone in bone growth?

Back

The resting zone contains inactive cartilage cells that serve as a reserve for future growth and development of the bone.

Front

How does bone remodeling occur?

Back

Bone remodeling involves the processes of bone resorption by osteoclasts and bone formation by osteoblasts, maintaining bone health and integrity.