bone structure and physiology Flashcards
what is the difference between how compact bone withstands force vs how spongy bone withstands force?
compact: withstands force in one direction
spongy: withstands force in many directions
what type of bone cell makes the bone matrix?
osteoblasts
what type of bone cell is the stem cell for other bone cells?
osteoprogenitors
what type of bone cells are large cells that break down bone matrix for remodeling/redistribution?
osteoclasts
what is the function of blood vessels?
delivers blood cells which carry oxygen and other nutrients to the cell
what is the function of canaliculi?
tiny gaps where osteocytes are able to communicate with one another and share resources
what is the function of compact bone?
helps withstand force in one direction
what is the function of endosteum?
protects the bone marrow
what is the function of haversian canals?
the space where blood vessels and nerves sit inside
what is the function of lamellae?
rings formed from minerals on the osteons where the osteocytes can be found
what is the function of medullary canals?
holds the yellow bone marrow
what is the function of nerves?
picks up internal/external stimuli and relay information to the nervous system
what is the function of osteocytes?
main bone cells that help regulate function and mineral content, also help break down the old matrix to make room for the new matrix
what is the function of the periosteum?
helps hold all blood vessels and nerves needed by the bone
what is the function of red bone marrow?
contains blood stem cells that can become red blood cells, white blood cells, or platelets
