Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Histology: Bone
WVSOM: Bone
| Question | Answer |
|---|---|
| 4 cells types found in bone | Ostoecytes, Osteoblast, osteoclast, osteoprogenerators |
| What is primary bone | immature bone. Collagen runs in random directions, low mineral count, and uneven stain |
| What is Secondary bone | mature bone. Deeply acidiphilic, organized, and resembles a "bulls-eye" |
| 2 types of secondary bone | Compact and spongy |
| Describe the composition of spongy bone | made up of spicles and traneculae. |
| What ability does spongy bone have and what gives it this ability | Ability to handle change and/or adjust to external stress. Trabeculae gives it this ability |
| What is the periosteum | noncalcified covering of the outside of the bone |
| What are Sharpeys fibers and where are they found | These hold the periosteum to the bone. Found in the periosteum |
| Is the periosteum vascular | YES |
| What are the two parts of the periosteum | OUter fibrous layer and inner osteogenic layer |
| What is the endosteum | bone's cell lining that covers all of the interior surfaces of the bone |
| What does the endosteum NOT include | osteocytes |
| Describe the structure of an osteon | Haversian system surrounded by matirx in a circumfrential pattern. |
| What interconnects the various osteons in bone | Volkmans canal |
| What makes up the organic matrix called osteoid | ground substance is proteoglycans and glycoproteins. GAG's. Osteonectin and osteocalcin |
| What causes osteoid to be mineralized | deposition of crystals of hydroxapatite |
| Which type of ossification occurs in most bones | Endochondral |
| Which type of ossification uses a cartilage model | Endochondral |
| Which type of ossificatin makes frontal and parietal bones | Intramembranous |
| Which type of ossification uses condensed mesenchyme to differentiate into osteoblast | Intramembranous |
| In which type of ossification does primary immature bone turn to secondary bone by use of osteoclast | Intramembranous |
| Where does bone remodeling take place | at the BMU's (Bone remodeling units) |
| How does bone remodeling work | Osteoblast recieve a signal and then signal to the osteoclast to start working |
| What function does bone remodeling serve | retains shape, size, architecture and repairs minor stress fractures |
| What is osteomalacia | a calcium or vitamin D deficency in adults. Characterized by decalcification of bones |
| What is osteoporosis | decrease in bone mass and quantity associated with a normal ratio of mineral to matirx. Caused by decreased formation and increase reabsorbtion. |
| What can cause osteoporosis | lack of physycial stress, less GH, in women less estrogen |
| Osteochondrodysplasia | extreme bending of long bones |
Created by:
lowryc
Popular Histology sets