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60 Cards in this Set

  • Front
  • Back
What are the five functions of bones?
Protect, Support, Store calcium, site of blood cell production and an anchor
What are the 4 classifications of bones
Long, Short, Flat and irregular
Diaphysis
Elongated shaft of a long bone
Epiphysis
`the end of a long bone, attached to shaft
Periosteum
Double layered connective tissue that covers and nourishes the bone
Osteoclasts
large cells that reabsorb/break down bone matrix
osteoblasts
bone forming cells
edosteum
connective tissue that covers the trabeculae of spongy bone cavity's and lines canals that pass through
compact bone
appears very dense but has many canals and passage ways that serve as conducts for nerves, blood vessels and lymphatic vessels
spongy bone
consists of trabeculae , looks poorly organized but is actually aligned precisely along the lines of stress
steps of bone repair due to a fracture
hematoma formation, fibrocartilage callus formation, bony callus formation, remodel
3 classifications of joints
Synarthros: immovable joints
amphiarthroses: slyghtly movable joints
diarthroses: freely movable joints
fibrous joints
bones joined by fibrous tissue , no cavity
sutures
seams, occur only in the bones of the skull
sydesmoses
fibrous joint where bones are connected by a chord or sheet of fibrous tissue
gomphoses
peg in socket formation (fibrous joint)
cartilaginous joints
articulating bones joined by cartilage
synchondroses
bar/ plate of hyaline cartilage unites bones
symphyses
surfaces of bones are covered with hyaline cartilage
sinovial joints
fluid containing joint cavity
bursae
flat sacs lined with synovial membrane "ball bearing"
ligaments
help direct bone movement and prevent undesirable motion
Gliding movement of synovial
flat surface glides or slips over another similar surface
angular movement of synovial
change increase or decrease the angle between two bones
flexion movement of synovial
bending movement that decrease the angle of the joint
extension movement of synovial
bending movement that increases the angle of the joint
Foot dorsiflexion
move towards shin
Plantar flexion of foot
pointing of toes
abduction
move away from the mid line
adduction
moving toward inline
rotation
turning bone on its own axis
supination
radius and ulna are parallel
pronation
radius rotates over ulna
Plane Synovial joints
articular surfaces are flat
Hinge Synovial joints
convex or cylindrical projection of one bone
Pivot Synovial joint
uniaxial rotation of one bone around its own long axis
condyloid synovial joint
oval articular surface of one bone fits into complementary concavity in another
Saddle Synovial joint
resemble a condyloid, but allow more movement
Ball & Socket Synovial joint
sphere of one fits into socket of another
3 commen joint injuries
sprain: ligaments reinforcing joint are ripped/stressed
cartilage: mainly tearing of knee meniscus, growth plate fissures
dislocation: bones are forced out of normal position
Bursitis
inflamation of a bursa
Tendonitis
inflamation of tendon sheaths
arthritis
inflammatory/ degenerative disease that damage joints
osteoarthritis
degenerative joint disease
Rheumatoid Arthritis
bodies immune system attacks its own tissue
When is the parathyroid hormone released
When blood calcium levels begin to drop below homeostatic levels. It causes calcium to be released from bones
What are Osteocytes
Mature bone cells that maintain bone in a viable state.
What are Oseoblasts
Immature bone cells , matrix depositing
What is Calcitonin
Causes blood calcium to be deposited in bones as calcium salts
Osteoclasts
Bone cells that liquefy bone matrix and release calcium to the blood
Simple fracture
Bone is broken cleanly, ends do not penetrate skin
Spiral fracture
bone breaks from twisting forces
Greenstick fracture
bone splinters but doesn't complete
Comminuted fracture
the bone is crushed
Compound fracture
bone ends penetrate through skin
Impacted fracture
broken end are pushed into eachother
Depressed fracture
common skull fracture
Nonsurgical realignment of broken bone
closed reduction
surgical realignment of broken bones
open reduction
True/False A hematoma usually forms at the fracture site
true