Bones of Human Anatomy🫀 Flashcards
what is the primary function of the skeletal system?
-to provide a supporting framework
-protect human organs
what is bone composed of?
bone is composed of 3 different components
1) calcium carbonate and calcium phosphate
2) collagen (protein)
3) water
what percentage of bone weight is made up of calcium carbonate and calcium phosphate?
60-70% bone weight is made up of
what role does collagen play in bones?
it provides flexibility and helps resist pulling and stretching forces.
what happens to collagen in bones with aging
it is lost, causing bones to become more brittle
what are to general classifications of bone?
cortical bone and cancellous (spongy) bone
describe the porosity and mineral content of cancellous bone
high porosity , low mineral content and low collagen
what is the structure of cortical bone?
compact and low porosity
name one function of cancellous bone
shock absorption due to its ability to change shape
list the 5 main types of bone
long bone, short bone, flat bone, irregular bone, and sesamoid bone
give an example of a long bone
femur or humerus
what do flat bones primarily do?
protect underlying organs
what is the function of short bones? and ex
they serve as good shock absorbers
ankle (tarsals) wrists (carpals)
what are irregular bones?
bones that cannot be classified into other groups (complicated shape)
they are the face bone and vertebrae
what is a sesamoid bone?
a bone that is oval shaped like a pea found in tendons eg; patella