bone terms (lab)

Question 0

Epiphysis

Answer 0

End of long bones

Question 1

Diaphysis

Answer 1

Shaft of long bones

Question 2

Medullary cavity

Answer 2

Hollow inside of long bones.

Yellow bone marrow for adults

Question 3

Osteocytes

Answer 3

Cells that maintain bone

Question 4

Osteoclasts

Answer 4

Destroy bone. Remodeling or to free calcium

Question 5

Osteoprogenitor cells

Answer 5

Bone stem cells that can become osteoblasts

Question 6

Endosteum

Answer 6

Lines bone cavities

Question 7

Periosteum

Answer 7

Outside of bones

Outer layer is dense irregular connective tissue

Question 8

Articular cartilage

Answer 8

Hyaline cartilage at ends of bones where they contact other bones

Question 9

Lamellae

Answer 9

Visible layers of bone matrix

Question 10

Osteon

Answer 10

Structural unit of compact bone, tree trunk appearance

Question 11

Central canal

Answer 11

Canal for blood vessels and nerves in osteon

Question 12

Lacunae

Answer 12

Small holes between lamellae. Osteocytes located here

Question 13

Canaliculi

Answer 13

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

Question 14

Trabeculae

Answer 14

Thin struts of spongy bone

Question 15

Intramembranous bone formation

Answer 15

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

Ex: skull, clavicle, mandible

Question 16

Endochondral bone formation

Answer 16

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

Question 17

Epiphyseal plate

Answer 17

Growth plate