Skeletal System Unit Exam

Front

What is intramembranous ossification?

Back

Intramembranous ossification is the process of bone development that occurs directly within fibrous membranes, primarily forming flat bones such as the skull.

Front

What is endochondral ossification?

Back

Endochondral ossification is the process of bone development where cartilage is replaced by bone tissue, primarily occurring in long bones.

Front

How do intramembranous and endochondral ossification differ in terms of location?

Back

Intramembranous ossification occurs in flat bones like the skull, while endochondral ossification occurs in long bones.

Front

What type of bones are formed through intramembranous ossification?

Back

Flat bones such as the skull, mandible, and clavicle are formed through intramembranous ossification.

Front

What type of bones are formed through endochondral ossification?

Back

Long bones such as the femur, tibia, and humerus are formed through endochondral ossification.

Front

What is the role of cartilage in endochondral ossification?

Back

Cartilage serves as a template that is gradually replaced by bone during the process of endochondral ossification.

Front

What are the stages of endochondral ossification?

Back

The stages include: 1) Formation of a cartilage model, 2) Growth of the cartilage model, 3) Development of primary ossification center, 4) Formation of medullary cavity, 5) Development of secondary ossification centers, and 6) Formation of articular cartilage.

Front

What is the significance of the primary ossification center?

Back

The primary ossification center is where bone tissue begins to replace cartilage, marking the start of bone development in long bones.

Front

What is the significance of the secondary ossification centers?

Back

Secondary ossification centers allow for the growth of bones after birth, contributing to the lengthening of long bones.

Front

What is the difference between appositional growth and interstitial growth?

Back

Appositional growth is the increase in bone thickness, while interstitial growth is the increase in bone length.