osteogenic cell they divide and develop into osteoblasts
forms new bone, does not divide, secretes collagen and gets trapped as the collagen
osteoblasts
calcifies, it matures into an osteocyte
a bone cell, formed when an osteoblast becomes embedded in the matrix it has
osteocyte
secreted. do not divide
bone cell that absorbs and removes unwanted bony tissue. multi-nucleated, originate
osteoclast
from WBC.
33% collagen fibers to resist stretching and twisting, ground substance formed of
organic part of extracellular matrix
proteoglycans and glycoproteins
glycoprotein A protein with one or more carbohydrates covalently attached to it.
A glycoprotein containing a protein core with attached long, linear carbohydrate
proteoglycan
chains.
hard matrix of bone to resist compression, 85% is hydroxyapatite and 15% is fluoride,
inorganic part of extracellular matrix
sulfate, potassium and magnesium
Hydroxyapatite Hardy crystals consisting of calcium and phosphate that form the bone matrix.
microscopic calcified ring around a central canal; blood vessels, nerve and lymph
compact bone vessels follow and connect all canals of the bone. waste removal and nutrient
transport. in shaft of long bones and covers spongy bone
shaped like a lattice work and not a canal system. some of the spaces will contain the
spongy bone
red marrow, in the epiphysis and bones of skull
structural unit of compact bone, elongated cylinder parallel with length of the bone.
osteon (Haversian system)
has a central opening
through the center of the oseton, houses blood vessels and nerve fibers, lined with
Central (Haversian) Canal
endosteum
Volkmanns Canals perpendicular to central canal for blood vessels and nerve fibers
lamellae arrangement of matrix (concentric, interstitial, and circumferential)
osteocytes spider shaped cells found in lacunae at junctions of lamellae
lacunae small cavities in bone that contain osteocytes. spaces between osteon rings
Hairlike canals that connect lacunae to each other and the central canal. allows
canaliculi
osteocytes to communicate through gap junctions
periosteum outer membrane lining of bone
delicate membraneous lining of medullary cavity for bone growth, repair and
endosteum
remodeling occur
supportive, on articular ends of bones. supports respiratory airways, embryonic
Hyaline cartilage
skeleton. connects ribs to sternum, and makes up epiphyseal plate
epiphyseal plate Growth plate, made of cartilage, gradually ossifies
absorbs shock and redistributes weight in pubic symphysis, intervertebral discs and
fibrocartilage
meniscus of knee
pubic symphysis the cartilaginous joint known that allows some movement to facilitate childbirth.
elastic cartilage flexible, found around external ear, epiglottis, and Eustachian tube
A narrow tube between the middle ear and the throat that serves to equalize pressure
Eustachian tube
on both sides of the eardrum. auditory
dense regular forms tendons, ligaments and reinforces joints
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