Anatomy Chapter 6 Flashcards
(30 cards)
what are the general functions of the skeletal system?
support protection leverage/movement storage of minerals and lipids blood cell production (hemopoiesis)
what does the skeletal system include?
bones
cartilages
ligaments
and other connective tissue
what kind of bone has a high fat concentration?
yellow bone marrow
where can red bone marrow be found?
axial bones
hip bone
prox. ends of humerus and femur
what are the 6 classifications of bone?
long bone short bone flat bone irregular bone sutural bones sesamoid bones
a child’s long bones have more ___ than adult’s long bones do.
cartilage
what is the ground substance of bone?
solid material called HYDROXYPATITE
what shape and what elements make up HYDROXAPATITE
Crystal structure
Ca, H, P
what kind of protein fibers are in bone?
collagen
what are the 4 types of bone cells?
osteocytes
osteoblasts
osteoclasts
osteoprogenitors
what are the kind of bone cells that are in mature bone cells and maintain the bone matrix
Osteocytes
where are mature bone cells?
compact and spongy bone
what kind of bone cells add to and build new bone matrix during growth and remodeling?
Osteoblasts
what kind of bone cells remove and tear down bone matrix during growth and remodeling
osteoclasts
what kind of bone cell maintains osteoblast population?
Osteoprogenitors
What are the two-layers of the outside surface of a bone called?
Periosteum
What are the two layers in periosteum made of?
outside layer : dense connective tissue
inside layer : epithelial tissue
the inside surface (lining of the marrow cavity) also covered by epithelial tissue is called ___.
endosteum
compact bone is arranged in ___.
OSTEONS
spongy (cancellous) bone is arranged in ____.
TRABECULAE
what word means circular, repeating unit of compact bone?
OSTEON
what kind of bone has no osteons and a trabecula matrix?
spongy bone
what kind of matrix forms a honeycomb-like lattice?
trabecula
how much of the is skeletal mass recycled per yr?
1/5
