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What is the origin of the cells involved in endochondral ossification?

Ectoderm

Mesoderm (correct)

Neuroectoderm

Endoderm

What type of bone is formed initially during endochondral ossification?

Spongy bone

Compact bone

Woven bone (correct)

Lamellar bone

What is the function of osteoprogenitor cells?

To differentiate into osteoclasts

To differentiate into osteoblasts (correct)

To produce collagen

To produce bone matrix

What is the name of the region where secondary ossification occurs?

Epiphysis Signup and view all the answers

What is the name of the canal found in compact bone?

Haversian canal Signup and view all the answers

What is the function of the periosteum?

To form the bone collar Signup and view all the answers

What is the term for the process of bone cell differentiation?

Migration and differentiation Signup and view all the answers

When does the primary ossification center form in the diaphysis?

During the 3rd month of fetal development Signup and view all the answers

How many secondary ossification centers form in the epiphyses?

4 Signup and view all the answers

What type of bone replaces the epiphyseal plate cartilage?

Spongy bone Signup and view all the answers

What is the function of the epiphyseal plate?

To allow for bone growth Signup and view all the answers

What is the term for the line that forms when the epiphyseal plates ossify?

Epiphyseal line Signup and view all the answers

During which stage of life do most primary ossification centers appear in the diaphyses of long bones?

Fetus Signup and view all the answers

What type of cartilage is not replaced by bone?

Articular cartilage Signup and view all the answers

What is the primary bone tissue that appears first in the development of bone?

Woven bone Signup and view all the answers

What is the main characteristic of woven bone?

Irregular arrangement of bone tissue Signup and view all the answers

What is the predominant type of collagen found in osteoid?

Type I collagen Signup and view all the answers

What is the main component of the ground substance in osteoid?

Chondroitin sulfate Signup and view all the answers

What type of ossification involves a cartilage model?

Endochondral ossification Signup and view all the answers

Which part of the skull undergoes intramembranous ossification?

Cranial vault Signup and view all the answers

What is the reason for the rapid ossification of the skull?

To ensure the skull is strong enough to withstand impacts Signup and view all the answers

What is the term for the shaft of a long bone?

Diaphysis Signup and view all the answers

What is the percentage of organic components in bone matrix?

25% Signup and view all the answers

What is the process of laying down new bone material by osteoblasts?

Osteogenesis Signup and view all the answers

What type of fibers are found in bone matrix?

Type I collagen fibers Signup and view all the answers

What is the term for the narrow portion between the epiphysis and the diaphysis?

Metaphysis Signup and view all the answers

What is the term for the process of bone formation that involves cartilage as a precursor?

Endochondral ossification Signup and view all the answers

What is the term for another name for spongy bone?

All of the above Signup and view all the answers

What is the major cause of decalcification of bones?

Loss of calcium Signup and view all the answers

What is a risk factor for decalcification of bones in women?

Menopause Signup and view all the answers

What is a consequence of decalcification of bones?

Brittle and fragile bones Signup and view all the answers

What is a complication of other diseases that can cause decalcification of bones?

Hyperparathyroidism Signup and view all the answers

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