Postnatal Bone Growth

What type of bone growth allows elongation of long bones?

• Endochondral ossification

• Intramembranous ossification

• Intramedullary ossification 

• Ugonafail ossification

What type of cartilage is the epiphyseal (growth) plate made up of?

• hyaline

• fibrocartilage

• elastic

What zone has little chondrocyte activity?

• proliferation zone

• Differentiation zone

• Resting zone

• Twilight zone

What do we call the zone in which the chondrocytes undergo rapid mitosis?

• zone of hypertrophic cartilage

• zone of calcified cartilage

• zone of resting cartilage

• Zone of proliferating cartilage

• zone of ossification

Tags

NGSS.HS-LS1-4

What are the spaces in the proliferation zone filled with?

• Water

• Cartilaginous matrix

• Air

What is the zone where calcification starts?

• Hypertrophic zone

• hypotrophic zone

• Hyperactive zone

• Hyperfragalistic zone

What do you think happens in the zone of calcified cartilage? (check all that apply)

• the chondrocytes start to secrete osteoid

• the chondrocytes differentiate into osteocytes

• The cartilage matrix calcifies

• the chondrocytes die

Which type of cell destroys the cartilage matrix?

• osteocytes

• osteoblasts

• osteoclasts

• chondroclasts