skeletal system Flashcards
major functions of the skeletal system
protection
framework
mineral storage
red blood cell production
movement
short bones
cuboid, same width and legth
eg. tarsals, carpals
long bones
longer than they are wide
eg. femur, humerous
flat bones
flat for muscle attachment
enclose cavities protect organs
sesamoid bones
bones grown into tendons around joints
irregular bones
bones that dont have a regular characteristic
compact bone tissue
offer strong structure
found in shaft of longbones, surround cavity
collagen provides rigidity
cancellous bone tissue
provide shock absorption
spongy bone, less dense
end of long bones, edges of irregular bones
structure of spine
cervical - 7 vertebrae
thoracic - 12 vertebrae
lumbar - 5 vertebrae
sacrum - 5 vertebrae (fused)
coccyx - 4 vertebrae (fused)
how do the vertebrae bones change as it goes down
increase in size - hold the weight
intervetebral discs
ligaments - absorp shock
allow small movement - bending and twisting
