Cells & Matrix 1

Question 1

What are the 4 basic tissues of the human body?

Answer 1

Muscle, epithelial, neural, & connective

Question 2

What is osteology?

Answer 2

The study of bone

Question 3

What are the 3 primary cell types of bone?

Answer 3

Osteoblasts, osteocytes, osteoclasts

Question 4

Osteoblast function?

Answer 4

Form bone

Question 5

Osteocyte function?

Answer 5

Maintain or nurture bone

Question 6

Osteoclast function?

Answer 6

Remodel bone

Question 7

What are the bone cells embedded in?

Answer 7

An amorphous matrix consisting of ground substance, protein fibers, and various minerals

Question 8

What is the primary constituent of the ground substance?

Answer 8

Glycosaminoglycans

Question 9

What types of glycosaminoglycans predominate in bone?

Answer 9

Chondroitin sulfates, keratin sulfates, & hyaluronic acid

Question 10

What is the principal type of protein fiber in bone?

Answer 10

Collagen type I

Question 11

What are the primary constituents of the bone mineral?

Answer 11

Calcium, phosphate, citrate, & carbonate ions

Question 12

What is the most frequently described deposit in bone?

Answer 12

Hydroxyapatite

Question 13

Bone is also the repository for what additional ions?

Answer 13

Sodium, magnesium, fluoride, lead, strontium, & radium

Question 14

What is Wolff’s Law as it pertains to bone?

Answer 14

Living tissue will respond to stressors such as anxiety, tension or pressure; bone is formed or absorbed in response to these same stressors

Question 15

What 3 responses of “living” bone were stressed in class?

Answer 15

Ability to heal, to remodel under stressors such as anxiety, tension or pressure and to age