Chapter 6 - Osseous Tissue

Question 1

How do you find bone classification?

Answer 1

1) by shape

2) by type or form

Question 2

Define long (shape)

Answer 2

Longer than it is wide ( wrist/ ankle)

Question 3

Define short (shape)

Answer 3

Like boxes (carpals/ tarsals)

Question 4

Define flat (shape)

Answer 4

Scapula, sternum,ribs,cranial

Question 5

Define irregular (shape)

Answer 5

Complicated shapes (coaxial,facial bones)

Question 6

Define sesamoid (shape)

Answer 6

Formed within tendons (patella)

Question 7

Define sutural (shape)

Answer 7

(Wormia) within sutures (skull)

Question 8

Define compact (type/form)

Answer 8

1)Outside of bone forms the wall of the bone (cortical bone-dense solid)

Question 9

What is compacts functional unit?

Answer 9

Osteon> in the direction of osteos

Question 10

What is compacts functions?

Answer 10

To bare bone weight
In parallel rows
Determines the thickness of the bone

Question 11

Define spongy bone (trabecular)

Answer 11

Found on the inside of the bone (on the ends of long bones) (network of struts)

Question 12

What is the spongy bones functions?

Answer 12

1) makes bones lighter(easier to move)
2) support bone marrow
3) cells
4) absorbs shock
5) no stress

Question 13

What are the 7 parts of a long bone?

Answer 13

1) diaphysis
2) epiphysis
3) metaphysis
4) medullary cavity
5) endosteum
6) periosteum
7) articular cartilage

Question 14

Define diaphysis

Answer 14

Short (compact)

Question 15

Define epiphysis

Answer 15

Ends of the bone

Question 16

Define metaphysis

Answer 16

Between epiphysis & diaphysis - are of bone development

Question 17

Define medullary cavity

Answer 17

Inside the bone marrow

Question 18

Define endosteum

Answer 18

Lines the medullary cavity/supports bone marrow cell service

Question 19

Define periosteum

Answer 19

Covers the outside of the bone/ dense collagen/ continuous with tendons and ligaments

Question 20

Define articular cartilage

Answer 20

On the ends of epiphysis

Question 21

What are the functions of the skeletal system?

Answer 21

1) supports
2) protects
3) leverage
4) storage of minerals(calcium/phosphorus) & lipids(yellow bone marrow/fat)
5) blood cell production(hematopoiesis) (red bone marrow/99.9% are red blood cells/pigment is hemoglobin)

Question 22

What is important for bone health in the matrix ?

Answer 22

Inorganic & organic

Question 23

Define inorganic material in the bone matrix

Answer 23

Calcium& phosphorous = 2/3 weight of bone; hardness

Question 24

Define the organic material in the bone matrix

Answer 24

Collagen(protein) = 1/3 weight of the bone;strength/flexibility

Question 25

2% of bone cells are?

Answer 25

Osteoblasts & osteoclasts

Question 26

Define osteoprogenater cells

Answer 26

Adult "stem cells"

Question 27

Define osteoblasts

Answer 27

Bones making cells (osteoenus)

Question 28

Define osteocytes

Answer 28

Mature cells/maintain the matrix/repair damage

Question 29

Define osteoclasts

Answer 29

"Bone ending cells" derived from macrophages

Question 30

Osteoblasts & osteoclasts are constantly doing what?

Answer 30

Battling