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45 Cards in this Set

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spongy bone contains osteons? T/F
FALSE
Irregular lattice appearance of spongy bone?
trabeculae
The trabeculae of spongy bone collects yellow bone marrow? T/F
FALSE
-RED BONE MARROW- site of new blood cell formation-
Another name for spongy bone?
cancellous bone
Bone is very abundant in nerve supply but not blood supply? T/F
FALSE
-very abundant in blood and nerve supply-
Process by which bone forms?
Ossification
Type of ossification where bone forms directly within mesenchyme arranged in sheetlike layers resembling membranes?
intramembranous ossification
Type of ossification where forms within hyaline cartilage that develops from mesenchyme?
endochondral ossification
Where would intramembranous ossification take place?
in utero; flat bones of skull & mandible
Bone growth in length is called?
interstitial growth
Bone growth in width is called?
appositional growth
The Zone of resting cartilage is the layer that anchors to the diaphyses? T/F
False
Anchors to the epiphysis
Where is the ONLY place bone can grow in length?
epiphyseal plate
NAME THAT ZONE:
column-like layer of maturing chondrocytes?
Zone of hypertrophic cartilage
NAME THAT ZONE:
layer of small, scattered chondrocytes anchoring the epiphyseal plate to the bone?
Zone of resting cartilage
NAME THAT ZONE:
layer of actively dividing chondrocytes?
Zone of proliferating cartilage
NAME THAT ZONE:
region of dead chondrocytes?
Zone of calcified cartilage
where it forms "new diaphysis"
*About what age does a person's bones stop growing?*
*AGE 25*
The _________is the last bone to stop growing?
clavicle
The ongoing replacement of old bone tisue by new bone tissue?
bone remodeling
The removal of minerals and collagen fibers from bone by osteoclasts?
bone resorption
The addition of mineral and collagen fibers to bone by osteoblasts?
bone deposition
What two minerals are needed (in large amounts) while bones are growing?
calcium and phosphorus
Required for collagen synthesis?
Vitamin C
Required for protien synthesis?
Vitamins K & B12
Which is not a factor of bone growth & bone remodeling?
A.family history
B.minerals
C.hormones
D.vitamins
A. family history
Any break in a bone?
fracture
Type of fracture where the broken ends of the bone protrude through the skin?
Open fracture
type of fracture that does not break the skin?
closed fracture
Fracture where the bone splinters at the site of impact;smaller bone fragments lie b/t the two main fragments?
comminuted fracture
A partial break in a bone in which one side is broken and the other side bends?
greenstick fracture
A fracture of the distal end of the lateral leg bone (fibula)?
pott's fracture
A fracture of the distal end of the lateral forearm bone (radius); distal fragment is displaced posteriorly?
colles' fracture
Place bone fracture repair in order?
1.bone remodeling
2.fibrocartilaginous callus formation
3.fracture hematoma
3.
2.
1.
This hormone increases blood calcium (Ca2+) level?
parathyroid hormone (PTH)
-secreted by the parathyroid glands-
This hormone decreases blood calcium (Ca2+) level?
calcitonin (CT)
-secreted by thyroid gland-
A condition of porous bones characterized by decreased bone mass and increased susceptibility to fractures?
osteoporosis
Condition characterized by failure of new bone formed by remodeling to calcify in adults?
osteomalacia
Affects the growing bones of children?
rickets
A degeneration of articular cartilage allowing the bony ends to touch; worsens due to friction b/t bones?
osteoarthritis
Infection of bone caused by the bacteria staphylococcus aureus?
osteomyelitis
Micrscopic unit of compact bone?
osteon (haversian system)
unspecialized stem cells deerived from mesenchyme?
osteogenic cells
Another name for compact bone?
Dense bone
Spongy bone DOES NOT contain osteons? T/F
True