7/16 Questions Exam 1 Flashcards Preview

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Flashcards in 7/16 Questions Exam 1 Deck (22):
1

What is the function of each type of bone cell?

Osteoblast form bone
Osteocytes maintain bone
Osteoclast remodel bone

2

What are the bone cells embedded in?

Amorphous matrix consisting of ground substance, protein fibers and various minerals

3

What is the primary constituent of the ground substance?

glycosaminoglycans

4

What types of glycosaminoglycans predominate in bone?

Chondroitin Sulfate
Keratin Sulfate
Hyaluronic Acid

5

What is the principal type of protein fiber in bone?

Collagen type 1

6

What is the most frequently described deposit in bone?

Hydroxyapatite

7

Bone is also the repository for what additional ions?

Sodium
Magnesium
Fluoride
Lead
Strontium
Radium

8

What is Wolff's law as it pertains to bone?

Living tissue will respond to stressors; bone is formed or absorbed in response to stress

9

What are the three responses of bone that allow it to be described as living?

It has the ability to heal
To remodel under stressors
And to age

10

What is bone the embryological derivative of?

Mesenchyme or Cartilage

11

What is the name given to the pattern of ossification in mesenchyme?

Intramembranous ossification

12

What is the timing for the appearance of intramembranous ossification?

From the second to third month in utero

13

What is the name given to the pattern of ossification in cartilage?

Endochondral ossification

14

What is the timing for the appearance of ossification in cartilage?

From the second to fifth month in utero

15

What part of the skull is derived from endochondral ossification?

Chondrocranium

16

Which skull bones are ossified by both endochondral and intramembranous ossification?

Mandible
Sphenoid
Temporal
Occipital

17

Which bone of the appendicular skeleton is formed by both endochondral and intramembranous ossification?

Clavicle

18

What are the names given to the centers of ossification based on time of appearance?

Primary centers of ossification appear before birth
Secondary centers of ossification appear after birth

19

What is the name given to the bone below an articulating surface?

Subchondral bone

20

What is the name of the outer fibro-cellular covering of bone?

Periosteum

21

What is the name given to the fibro-cellular lining of bone?

Endosteum

22

What are the four basic tissues of the human body?

Epithelial
Muscle
Neural
Connective