+
Related Flashcards
Cards In This Set
| Front | Back |
|
What does the skeletal system contain?
|
The skeletal system contains bones, as well as cartilage, membranes, and it is considered an organ.
|
|
What is the skeletal systems function?
|
The functions of the skeletal system are support, protection, mineral storage, movement, blood cell production, and storage of lipids.
|
|
What are the minerals that bone store?
|
The minerals bone store are calcium and phosphorus in the form of calcium phosphate also called hydroxyapatite.
|
|
What does compact bone and spongy bone contain?
|
Compact bone and spongy bone contain lamellae, osteocytes, lacunae, canaliculi and trabeculae: BUT only compact bone contains osteons.
|
|
How does intramembranous and endochondral ossification differ?
|
Endochondral ossification involves the replacing of hyaline cartilage, while intramembranous involves replacing fibrous membranes.
|
|
How do most bones develop?
|
Most bones develop via endochondral ossification (involving hyaine cartiage).
|
|
What are the major steps of endochondral ossification?
|
The major steps to endochondral ossification are:
1. Hyaline cartilage breaks down.
2. A periosteal bud invades the cavity and osteoblasts produce spongy bone tissue.
3. a medullary cavity forms, while osteoclasts break down spongy bone (making the cavity)
4. Compact bone replaces cartilage on the outside of the bone.
5. Secondary ossification centers form in the epiphyses.
6. Articular cartilage is formed.
7. The epiphyseal plate is formed
|
|
What are OSTEOBLASTS?
|
OSTEOBLASTS are bone FORMING cells.
|
|
What are OSTEOCLASTS?
|
OSTEOCLASTS BREAK DOWN and RESORB bone.
|
|
What are OSTEOCYTES?
|
OSTEOCYTES are mature bone cells, surrounded by bone matrix and can turn into osteoblasts if needed.
|
|
What are the types of bone by size and shape?
|
The types of bone by size and shape are long, short, flat, irregular, and sesamoid.
|
|
What's an example of a long bone?
|
Long bone: Femur and humerus
|
|
What's an example of a short bone?
|
Short bone:Tarsal; Wrists and ankles
|
|
What's an example of a flat bone?
|
Flat bone: Parietal skull and scapula
|
|
What's an example of an irregular bone?
|
Irregular bone: Facial and vertebra
|
