Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
articular cartilage |
covers the ends of most bones at movable joints |
|
|
Wolff's Law |
a bone remodels according to the stresses placed upon it. ex: long bones thickest at point most likely to break ex: trabeculae thicken in spongy bone along lines of compression |
|
|
Histology of bone |
a. Organic: 35% -> cells, proteins, collagen Fibers. b. Inorganic: 65%-> Mineral salts ->Hydroxyapatite |
|
|
hydroxyapatite formula |
Ca3(PO4)2-(OH)2 |
|
|
Together bones resist... |
~Compression-1/2 as much as steel ~Tension- as much as steel |
|
|
How much Ca++ does bone store |
99% |
|
|
Ca++ functions |
Heart, nerve, muscles, enzymes, clotting |
|
|
What does the bone do? (In relavance to Ca++) |
Releases Ca++ to blood when low blood Ca++ and uptakes Ca++ from blood when High Ca++ |
|
|
Skeletal Muscles |
Muscle composed of cylindrical multi-nucleiate cells with obvious striations (voluntary) |
|
|
Cardiac muscles |
Specialized muscles of the heart (involuntary) |
|
|
Smooth Muscles |
Spindle shaped cells with one centrally located nucleus no external visible striations found in the walls of hollow organs |
