Chapter 6: Bones and Skeletal System
Diaphysis: shaft of a long bone
Extracellular Matrix: made up of ground substance + fibers... is made up of 15% water, 55% inorganic component, 30% organic comp
onent,
inorganic component: (mineral salts) provides hardness to bones
Organic Component: is composed of collagen fibers and provides bone with strength and flexibility
Epiphyses: the 2 expanded ends of a Long Bone that have Spongy Bone inside
Periosteum: dense irregular CT covers shaft
Marrow Cavity: in hollow shaft
Endosteum: lines marrow cavity

Axile Skeleton: (section that contains skull, vertebrae, sternum, ribs)
Apendicular Skeleton: includes everthing else... gurdals are bones+ limbs of bones that help connect limbs to body)
Calcification:
Epiphyseal Plate:
Compact Bone: forms the outer layer of all bones and most of DIAPHYSIS of long bones (contain osteons, lamellae, Haversian Canal,
Volkmann Canals, Lacunae, Canaliculi)
Spongy Bone: does not contain Osteons, contains trabeculae which has bone marrow and are arranged in various directions to resist stress
Osteoclasts: cells that break down bone, found in endosteum
Osteocyte: mature bone cells that are trapped in matrix
Osteoblast: bone-building cells that produce matrix components
Osteogenic: mitotic stem cells found in periosteum and endosteum
Ossification: the process that forms the bone.. assisted by calcitonin.
Bone Formation: occurs in 3 situations that include 1) In the fetus, embryo to form the BONY SKELETON, 2) In early adulthood as growth in length of bones, 3) throughout life as remodelling( subjected to heavier loads and grows thicker and stronger) of bone & repair of fractures
Bone Remodelling:
Intramembranous Ossification:
Endochondral Ossification:

	Created by melissareanneoli over 10 years ago

Anatomy and Physiology Note on Anatomy Terms , created by melissareanneoli on 05/12/2013.