Microanatomy, Bones, Osteons

Anatomy and physiology test (10/13)

epiphysis

ends of bone/spongey bone

diaphysis

shaft of the bone (contains the medulla)

epiphyseal disk

cartillage connecting the epiphysis and diaphysis

articular cartillage

cartillage that covers end of bone

periosteum

tough membrane covering the whole bone

medullary cavity

chamber filled w/ bone marrow (endosteum lines the cavity)

osteocytes

mature bone cells, connected by canaliculi

lamella

rings formed around the haversian canal (haversian is connected by volkmann’s canal)

lacuna

chambers that hold osteocytes

osteoblasts

create osteocytes

osteoclasts

bone resorption

flat bones

for protection
ex: sternum, ribs, skull

long bones

support weight/movement
ex: humerus, femur

short bones

stability/movement
ex: carpals, torsals

irregular bones

protect organs
ex: vertebrae, pelvis

sesamoid bones

reinforce tendons
ex: patella