Module One, Lecture Four

Question 1

What are the two extracellular components of bone, and their percentages?

Answer 1

Organic 33% Inorganic 67%

Question 2

What is the main organic component of bone tissue?

Answer 2

Collagen

Question 3

What is the function of Collagen in Bone Tissue?

Answer 3

Acts as a structural framework, providing flexibility

Question 4

How is collagen structured in bone tissue?

Answer 4

Long fibres of collagen sit in a ground substance called proteoglycans

Question 5

What is the ground substances that collagen sits in?

Answer 5

Proteoglycans

Question 6

What are the inorganic components of bones?

Answer 6

Hydroxyapatite + other Ca minerals ( mineral salts )

Question 7

What is the function of the Inorganic Component of Bone Tissue?

Answer 7

Makes the bone hard and resistant to compression

Question 8

What percentage of bone mass is given by cells?

Answer 8

2%

Question 9

What are the four types of bone cells?

Answer 9

Osteogenic cells, Osteoblasts, Osteoclasts, Osteocytes

Question 10

What is the role of Osteogenic cells?

Answer 10

Stem cells that produce osteoblasts

Question 11

What is the function of osteoblasts?

Answer 11

Produce new bone matrix ( ossification )

Question 12

What is the process of bone growth called?

Answer 12

Ossification

Question 13

What is the function of Osteocytes?

Answer 13

Recycle protein and minerals from matrix

Question 14

What is the function of Osteoclasts?

Answer 14

Remove bone matrix

Question 15

What is the process of bone destruction called?

Answer 15

Osteolysis

Question 16

What are the two types of Bone Tissue?

Answer 16

Compact & Cancellous