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Bone Class & Mark

compact bone dense & made up of organizational units called osteons
spongy bone composed of small trabeculae (columns) of bone & lots of open space
long bones wide generally with a shaft & heads at either end - femur & phalanges
short bones cube shaped & more spongey bone than compact - tarsals & carpals
flat bones generally thin, 2 waferlike layers of compact bone sandwiching a thicker layer of spongey bone between them (can be curved)
irregular bones bones that do not fall into one of the other categories - vertebrae
tuberosity large rounded projection; may be roughened
crest narrow ridge of bone; usually prominent
trochanter very large, blunt, irregularly shaped process ( only on femur)
line narrow ridge of bone; less prominent than a crest
tubercle small rounded projection or process
epicondyle raised area on or above a condyle
spine sharp, slender, often pointed projection
process bony prominence
head bony expansion carried on a narrow neck
facet smooth, nearly flat articular surface
condyle rounded articular projection
ramus armlike bar of bone
fissure narrow, slitlike opening
foramen round or oval opening through a bone
notch indentation at the edge of a structure
meatus canal-like passageway
sinus bone cavity, filled with air and lined with mucous membrane
fossa shallow basinlike depression in a bone, often serving as an articular surface
sesamoid bones special types of short bones formed within tendons - patella
sutural bones tiny bones between cranial bones
bone markings reveal where bones form joints with other bones, where muscles, tendons, and ligaments were attached, and where blood vessels and nerves passed
atlas between the axis and atlas vertebrae, which one is on top?
holes called foreman what unique characteristic do the cervical vertebrae have?
24 single bones How many vertebrae are in the vertebral column?
7 How many cervical vertebrae are there?
12 How many thoracic vertebrae are there?
5 How many lumbar vertebrae are there?
sacrum & coccyx What are the 2 fused bones in the spine?
intervertebral discs (fibrocartilage) What is inbetween the vertebrae?
cervical vertebrae Small, spinous process short, wide transverse processes, contain tranverse foramen
Atlas no body, superior articular faucets, "yes", C1
Axis dens (pivot joint), "no", C2
thoracic vertebrae body heart-shaped, long spinous processes with sharp downward hook, superior & inferior articular processes, vertebral foramen round
lumbar vertebrae massive bodies, short thick horizontal spinous processes, superior and inferior articular faucets
Created by: ellyeaton



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