Week 3 - The Skeleton Flashcards
the skeletal system includes
bones of the skeleton
cartilages
ligaments
other connective tissues
function of the skeletal system
structural support
storage of minerals and lipids
blood cell production
protection and leverage
categories of bones (shapes)
long short irregular flat sesamoid sutural (wormian)
a typical long bone has
diaphysis epiphyses metaphyses articular cartilages marrow cavity
diaphysis
the shaft of the bone
epiphyses
head of the bone, this is where the growth plate is found
metaphys
referred to as the neck of the bone
articular cartilage
the region of the bone that articulates with another bone forming a joint
marrow cavity
center cavity of the bone and is composed of soft marrow
where does blood cell production occur
marrow cavity
what are the two types f bone
compact (dense)
spongy (cancellous)
the marrow cavity and spaces within spongy bone contain two types of _________
bone marrow
two types of bone marrow
yellow (lipid storage)
red (blood cell formation)
________ is a supporting connective tissue with a solid matrix
osseous tissue
the ________ is very dense and contains deposits of calcium salts
bone matrix
the bone matrix consists of
largely of crystals of hydroxyapatite (formed when calcium phosphate interacts with calcium hydroxide)
______ are mature bone cells that account for most of the cell population
osteocytes
layers of matrix are called
lamellae
function of osteocytes
maintain and monitor the protein and mineral content of the surrounding matrix
also can participate in the repair of damaged bone
osteoblasts synthesize the bony matrix in a process called
osteogenesis
osteoclasts dissolve the bony matrix through
osteolysis or resorption
basic functional unit of compact bone
osteon
______ are layers of calcified matrix
lamellae
spongy bone contains
trabecular (struts and plates) in an open network
