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Flashcards in Skeletal System Deck (121)
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Five types of bone

1. Long
2. Short
3. Flat
4. Irregular
5. Sesamoid

1

Give ex of each of the five bones

1. Long- femur
2. Short- tarsal
3. Flat- parietal
4. Irregular- vertebra
5. Sesamoid (round)- patella

2

Glycosaminolgycans (gags)

Organic matter in bone

3

Hydroxyapatite

Only found in bone!!
Inorganic; mineral

4

Relationship btwn skeleton and calcium

Skeleton is reservoir of calcium, it stores extra

5

Lamellae

Layers

6

Concentric circles

Rings start out small and get larger toward outside

7

What kind of tissue is bone

CT

8

Epiphyseal plate

Hyaline cartilage; where your bone grew from as you grew; forms a model for bone to replace

9

Osteogenic cells

Will eventually give rise to bone

10

Osteon

Basic stuctural unit of compact bone

11

Does periosteum rot

Yes over time

12

Medullary cavity

Cavity inside bone

13

Bone salts are located ?

In the matrix

14

What are 2 bone salts and what do they do

Calcium carbonate and hydroxyapatite (unique to bone!!!)

Make bone hard

15

2 diff btwn bone and cartilage

Bone has concentric rings

Cartilage has chondroblasts, bones has osteoblasts (both sit in lacunae)

16

Is bone vascular?

Yes

17

What is in the middle of each osteon?

Central canal (Haversion)

18

Another name for central canal

Haversion canal

19

What tissue are the rings in osteon

CT

20

Where are osteocytes located?

In lacunae in between concentric circles

21

Perforating (volkmann's) canal

Enter bone from outside and inside feeding into Haversian systems carrying nerves and blood vessels

22

Sharpey's fibers

Keep periosteum so strong and from peeling off; anchor it

23

Where is red marrow

Spongy bone

24

Canaliculi

Canals btwn lacunae of ossified bone; osteocytes project into them

25

What kind of marrow is in the medullary cavity?

Yellow marrow

26

How many vertebrae are there?

33

27

How many cervical vertebrae are there and what are the first 2 specifically called?

7

Atlas
Axis

28

How many thoracic vertebrae are there

12

29

How many lumbar vertebrae are there

5