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Flashcards in bone terms (lab) Deck (18)
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Diaphysis

Shaft of long bones

1

Epiphysis

End of long bones

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Medullary cavity

Hollow inside of long bones.

Yellow bone marrow for adults

3

Osteocytes

Cells that maintain bone

4

Osteoclasts

Destroy bone. Remodeling or to free calcium

5

Osteoprogenitor cells

Bone stem cells that can become osteoblasts

6

Endosteum

Lines bone cavities

7

Periosteum

Outside of bones

Outer layer is dense irregular connective tissue

8

Articular cartilage

Hyaline cartilage at ends of bones where they contact other bones

9

Lamellae

Visible layers of bone matrix

10

Osteon

Structural unit of compact bone, tree trunk appearance

11

Central canal

Canal for blood vessels and nerves in osteon

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Lacunae

Small holes between lamellae. Osteocytes located here

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Canaliculi

Small canals that radiate outward form central canal blood vessels to lacunae and provide nutrients to osteocytes

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Trabeculae

Thin struts of spongy bone

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Intramembranous bone formation

Osteoblasts develop from mesenchymal cells and begin depositing bone, forming ossification center

Ex: skull, clavicle, mandible

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Endochondral bone formation

hyaline cartilage proto-bone gradually destroyed from within as bone is deposited to replace it. Begins in womb, continues to maturity in early 20s

Observed at epiphyseal plate

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Epiphyseal plate

Growth plate