chapter 7

Question 1

functions of skeleton (6)

Answer 1

support
protection
movement
electrolyte balance
acid-base balance
blood formation

Question 2

individual bones are made up of

Answer 2

bone tissue
marrow
cartilage
periosteum

Question 3

yellow fat contained in

Answer 3

marrow cavity

Question 4

osteocyte

Answer 4

when osteoblast is encased in tissue

Question 5

organic vs inorganic

Answer 5

organic=collagen, gags (heated bone)

inorganic=hydroxappatite (vinegar)

Question 6

pathologies of bone

Answer 6

rickets

brittle bone disease

Question 7

rickets

Answer 7

soft bones; don’t lay enough hydroxyapatite

vinegar and chicken bones

Question 8

brittle bone disease

Answer 8

protein deficiency

decrease in collagen

Question 9

compact bone

Answer 9

lamellae
haversion (central) canal
canaliculi
osteon
resist tension and compression
not all bone is laid down in osteons

Question 10

lamellae

Answer 10

collagen fibers corkscrew down

opposite direction to provide strength

Question 11

haversion central canal

Answer 11

volkman canals lined with endosteum

Question 12

osteon

Answer 12

central canal and lamellae

Question 13

spongy bone

Answer 13

sponge-like appearance
lays down according to stress lines
no central canals
trabeculae distribute weight equally
blood filled spaces, filled with RBM

Question 14

osteon

Answer 14

basic structural unit

Question 15

bone marrow:

Answer 15

soft tissue
red marrow-hematopoietic tissue
yellow marrow
gelatinous marrow of old age

Question 16

soft tissue

Answer 16

medullary space of long bones
trabeculae
large central canals

Question 17

red marrow-hematopoietic tissue

Answer 17

thick blood

hemopoietic: blood cell production

Question 18

yellow marrow

Answer 18

fatty marrow of LONG bones in adults

Question 19

gelatinous marrow of old age

Answer 19

yellow marrow replaced with reddish jelly

Question 20

intramembranous bone formation

Answer 20

check screenshot;

flat bone development

Question 21

endochondral ossification

Answer 21

1. development of cartilage model
2. primary ossification
3. vascular invasion
4. secondary marrow cavity
5. formation of epiphyseal plate
6. cartilage consumed

Question 22

metaphysis

Answer 22

aka epiphyseal plate

Question 23

age when epiphyseal closes

Answer 23

18-25

Question 24

bone growth in width

Answer 24

appositional growth at bone’s surface

bone closest to central canal=newest bone