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Flashcards in Skeletal System Deck (89)
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1

List the functions of the skeletal system. (Tip - PMS SB)

Protect internal organs Movement - provides leverage Support Storage of calcium Blood cell production

2

What tissue forms bone structure?

Specialised connective tissue

3

What are the two components of the Matrix?

Organic component Inorganic component

4

What properties does osteoid have? (SEF)

Strong Easily compressed Flexible

5

What properties does hydroxyapatite have? (HIB)

Hard Inflexible Brittle

6

What properties does the combination of osteoid and hydroxyapatite give to bone? (SFR)

Strength Flexibility Resistance to shattering

7

What 2 complexes make up osteoid?

Collagen Protein

8

What are the mineral salts that make up most of hydroxyapatite?

Calcium Phosphate Calcium Carbonate

9

Is osteoid organic or inorganic?

Organic (O for osteoid and organic)

10

Is hydroxyapatite organic or inorganic?

Inorganic

11

Cells are suspended in the matrix of bones? True or false?

True

12

Name the four cell types suspended in connective tissue matrix?

Osteoblasts Osteocytes Osteoclasts Osteogenic Stem Cells

13

Which cells produce new bone and secrete osteoid?

Osteoblasts

14

What is a mature osteoblast called?

Osteocyte

15

What is the function of an osteocyte?

To maintain the connective tissue matrix in the bone

16

Where are osteocytes located?

Lacunae

17

What does Lacunae mean?

Nest

18

What is the function of an osteoclast?

Removes mineral from the matrix Bone remodelling

19

What is a mature osteogenic stem cell known as?

Osteoblast

20

Where are osteogenic stem cells found?

Perisoteum Endosteum

21

What are the two types of bone tissue?

Compact (hard, on surface) Cancellous (spongy, interior)

22

What are the component parts of a haversian system? (BLOC)

Blood vessels Lamallae Osteocytes in lacunae Canaliculi

23

What is another name for haversian system?

Osteon

24

What are the different types of lamellae? (ICC)

Interstitial Circumferential Concentric

25

What is a Canal of Volkman?

Space through which blood vessels interconnect between the individual osteons.

26

What is the benefit of osteons aligning in the same direction?

Increases unidirectional strength

27

What is lamellae?

A sheet like structure present in

28

What is the name given to the structures in cancellous bone that give rise to the spongy appearance?

Trabeculae (small beams)

29

What is contained in the spaces between trabeculae?

Red or Yellow bone marrow

30

What type of tissue is red bone marrow?

Myeloid tissue