Bio quiz Flashcards
(29 cards)
Displaced
bone ends are out of normal alignment
Nondisplaced
bone ends retain their normal position
Complete
bone is broken all the way through
Incomplete
bone is not broken all the way through
Linear
the fracture is parallel to the long axis of the bone
Transverse
the fracture is perpendicular to the long axis of the bone
Open(Compound)
bone ends penetrate the skin
Closed(Simple)
bone ends do not penetrate the skin
Comminuted
bone fragments into three or more pieces, commonly in the elderly
Compression
bone is crushed, common in porous bone
Depressed
broken bone portion pressed inward, typical skull fracture
Greenstick
incomplete fracture where one side of the bone breaks and the other bends
Spiral
ragged break when bone is excessively twisted, commonly in sports
Epiphyseal
epiphysis separates from diaphysis along epiphyseal line
Bone fractures are classified by
1) Position of the bone ends after fracture
2) Completeness of the break
3) Orientation of the fracture to the long axis of the bone
4) Whether or not the bone ends penetrate the skin
Hematoma formation
a mass of clotted blood (hematoma) forms at the fracture site
3 structural classes are…
fibrous,cartilaginous, synovial
Fibrous
fibrous connective tissue joins bones
Cartilaginous
cartilage directly connects bones
Synovial
1) bones are separated by a fluid-filled joint cavity
2) all are diarthroses
3) most joints in the body
3 functional classes are…
Synarthroses-immovable, amphiarthroses-slightly moveable, diarthroses-freely moveable
Sutures
b/n skull bones, fibrous joints
Syndesmoses
a ligament of fibrous connective tissue connects bones, fibrous joints
Gomphoses
teeth in their sockets, fibrous joints