The Skeletal System Axial

Front 1

Number of bones

Back 1

~206

Front 2

Skull, thoracic, vertebral column etc.

Back 2

Axial (~80)

Front 3

bones of arms, legs, connecting bones to axial

Back 3

appendicular

Front 4

long, slender, shaft and 2 ends

Back 4

long bones

Front 5

boxed/cubed shaped, have very dense outside filled with spongy bones in middle

Back 5

short bones

Front 6

flat, thin, roughly parallel surfaces of compact bones, spongey bone sandwich

Back 6

flat bones

Front 7

no other names, miscellaneous bones with complex shapes and structures

Back 7

Irregular bones

Front 8

small, flat, round, develop around and in tendons near joints

Back 8

sesamoid bones

Front 9

Extra bones, small flat oddly shaped bones found between suter lines in skull

Back 9

Sutural bones

Front 10

at ends of bones

Back 10

epiphysis

Front 11

shaft in between two ends

Back 11

diaphysis

Front 12

covers each epiphysis, type of hyalin cartilage, antifriction device

Back 12

articular cartilage

Front 13

important for regeneration of bones, covers shaft of bone

Back 13

periosteum

Front 14

plates of bones found in sponget bones- lined with cell layer called endosteum

Back 14

trabeculae

Front 15

only on inner and outer surfaces or if you've had injury to bone. Only cell type that can make new bone

Back 15

osteoblasts

Front 16

mitotically active cell, daughter cell becomes osteoblast, found in inner layer of periosteum

Back 16

osteoprogenitor

Front 17

mature bone cell, can't make bone anymore, moitors protein and mineral content of bone

Back 17

osteocyte

Front 18

secretes acid into boney matrix causing breakdown, to get more Ca into the blood stream and replace bones

Back 18

osteoclasts

Front 19

osteoblasts replacing cells osteoclasts destroyed

Back 19

remodeling

Front 20

bone put down in layers outside to inside

Back 20

Lamellae