Bones flash cards


Fibrous membrane surrounding bone

Articular cartilage

Layerof hyaline cartilage found at joints covering epiphysis


Found at each end of the long bones


Shaft of long bones between the bone's epiphyses

The marrow cavity is located in the hollow center


Membrane that lines the medullary/marrow cavity

Marrow cavity

The hollow center of the diaphysis of a long bone. It is lined with spongy bone and stores marrow

Spongy bone

Bone structure where there is not heavy stressed coming from one direction or where stresses come from many different directions

Compact bones

AKA dense boneSeals the outer surface of bones and found wherever stress on bone arrives from only one dirction


Sm spaces in matrix between the lamellae of an osteon

Osteocytes are found here


Supportive columns within compact bone.Looks like a cross cut of a tree trunk


Mature bone cells that maintain mineral and protein components of bone matrix.Found within the lacunae


Small diffusion channels radiating outward from a central canal.Facilitates nutrients, gas and waste exchange between the blood and bone

Central canal

AKA Haversian CanalLongitudinal canal in center of an osteon that contains blood vessels and nervesIntersects with perforating canal

Perforating canals

Canal running perpendicular to osteons and intersecting with central canalsServes as a passage for nerves, blood vessels, and lymphatic vessels through the periosteum and into the bone


The lattice or meshwork of bony struts found in spongy bone. Space inbetween trabeculae house red marrowUnlike compact bone - NO osteons!

Circumferential lamellae

The ring like structures that occur underneath the periosteum and wrap around the entire boneCircumferential lamellae are added as bone grows in diameter

Interstitial lamellae

Found between intact osteons and are remanents of old osteons that have been partially removed as the bone remodels

Concentric lamellae

The calcified matrix rings of an osteon

Long bones

Bones comprised of 2 epiphysis and diaphysis

Short bones

No epiphysis, bones almost as wide as they are long, boxy shaped

Sesamoid bones

Bones that form inside of tendonsThe largest sesamoid bone is the patella and looks like a nut

Flat bones

Thin and platelike bones but they can be shaped or curved like the skull or ribs

Irregular bones

Bones that do not fit in the other categoriesExamples: vertebrae

Sutural bone

Usually in skull, they occur where interlocking joints of the skull branch and isolate a small piece of bone.


Any projection or bump


Extension of a bone making an angle with the rest of the structure


Large, rough projection


Small, rounded projection


Prominent ridge


Low ridge


Pointed process


Expanded articular end of an epiphysis, separated from the shaft by the neck


Smooth, rounded articular process


Smooth, grooved articular process shaped like a pulley


Small, flat articular surface


Shallow depression


Narrow groove


Rounded passageway for blood vessels or nerves


Passageway through the substance of a bone


Elongated cleft

Sinus or Antrum

Chamber within a bone, normally filled with air