Bone Formation, Growth And Remodeling

Question 1

What are the 2 steps of ossification?

Answer 1

1. Hyaline cartilage is covered by bone forming cells called osteoblasts.
   Hyaline cartilage is digested away, opening up a medullary cavity within the newly formed bone.
2. Controlled by hormones, most importantly the growth hormone.

Question 2

What are the 2 regions that are not converted to bone after birth?

Answer 2

1. Articulate cartilage

2. Epiphyseal plates

Question 3

What 2 factors initiate bone remodelling?

Answer 3

1. Blood calcium levels.

2. Pull of gravity and muscles on the skeleton.

Question 4

Osteoclasts

Answer 4

Giant bone destroying cells activated by parathyroid hormone.

Question 5

What are the 2 strongest tissues that make up the skeleton?

Answer 5

Cartilage and bone.