Anatomy and Physiology Flashcards
High concentration of inorganic material in matrix of collagen fibers. Can remodel throughout life
skeletal system
Type of bone that is dense and resistant to compression
cortical
Type of bone that is formed by thin plates laid down in response to stress and shaped to accomodate loads
cancellous (trabecular)
Name of vascularized tissue surrounding bone providing nutrition
periosteum
tubes of concentric layers of bone that surround Haversian canals
osteon
surround blood vessels and nerve cells throughout the bone and communicate with osteocytes in lacunae – allows for mineral deposition
haversian canal
small channels in the bone that transmit blood vessels from the periosteum into the bone and that communicate with the Haversian canals.
volkmann’s canal
What is the function of osteoclasts?
bone reabsorption
What is the function of osteoblasts?
bone production
What are osteocytes?
mature bone cells
Stages of fracture healing
hematoma–>fibrocartilage–>callus–>ossification–>remodeling
Most abundant mineral in the body, 99% is kept in the bones
calcium
Bone is laid down where it is needed and resorbed where it is not needed
Wolff’s Law
Medical condition that occurs when reabsorption of bone exceeds formation. Bones become weak and porous
osteoporosis
Smooth, shiny tissue on the end of long bones, minimizes friction. No blood supply. Composes of collagen with some inorganic salts, glycoproteins, and lipids
articular cartilage