Skeletal System (Midterm) Flashcards
In infants most of the skeleton is
Cartilage
Strong flexible tissue
cartilage
Over time the cartilage is
replaced by solid bone,
usually complete by the
time you stop growing.
Not all cartilage is
replaced in adults. Many
joints contain cartilage,
protecting the ends of
bones (ears and the end
of the nose is also
cartilage).
How many % of bone in adult body weigth
20%
Bone is made up of minerals which is
Calcium
Phosphorus
Types of Bone Cell
Osteogenic Cell
Osteoblast
Osteocyte
Osteoclast
Other term for Osteogenic Cell
Osteoprogenitor Cell
are mitotically active stem
cells found in the membranous periosteum and endosteum.
Osteogenic Cell
mature bone cells; monitor and maintain the bone matrix
osteocytes
bone-forming cells; synthesize and secrete collagen matrix and calcium salts
Osteoblast
giant bone-destroying cells
Break down bone matrix for remodeling and release of calcium in
response to parathyroid hormone
Osteoclast
Bone remodeling is performed by both
Osteoclast and Osteoblast
Process of bone formation
Ossification
Ossification occurs in
Hyaline Cartilage Model
Fibrous Membrane
Types of Ossification
Intramembranous ossification
Endochondral ossification
Both type of bone formation result in
Compact and Spongy Bone
Bone formation that occurs within connective tissue membranes
Occurs when osteoblasts begin to produce bone within CT
Bones of the skull
Intramembranous Ossification