Flashcards in Skeletal System Deck (121)
Five types of bone
Give ex of each of the five bones
1. Long- femur
2. Short- tarsal
3. Flat- parietal
4. Irregular- vertebra
5. Sesamoid (round)- patella
Organic matter in bone
Only found in bone!!
Relationship btwn skeleton and calcium
Skeleton is reservoir of calcium, it stores extra
Rings start out small and get larger toward outside
What kind of tissue is bone
Hyaline cartilage; where your bone grew from as you grew; forms a model for bone to replace
Will eventually give rise to bone
Basic stuctural unit of compact bone
Does periosteum rot
Yes over time
Cavity inside bone
Bone salts are located ?
In the matrix
What are 2 bone salts and what do they do
Calcium carbonate and hydroxyapatite (unique to bone!!!)
Make bone hard
2 diff btwn bone and cartilage
Bone has concentric rings
Cartilage has chondroblasts, bones has osteoblasts (both sit in lacunae)
Is bone vascular?
What is in the middle of each osteon?
Central canal (Haversion)
Another name for central canal
What tissue are the rings in osteon
Where are osteocytes located?
In lacunae in between concentric circles
Perforating (volkmann's) canal
Enter bone from outside and inside feeding into Haversian systems carrying nerves and blood vessels
Keep periosteum so strong and from peeling off; anchor it
Where is red marrow
Canals btwn lacunae of ossified bone; osteocytes project into them
What kind of marrow is in the medullary cavity?
How many vertebrae are there?
How many cervical vertebrae are there and what are the first 2 specifically called?
How many thoracic vertebrae are there