Lab 12- bone structure and classification(test 2) Flashcards Preview

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Flashcards in Lab 12- bone structure and classification(test 2) Deck (22):
1

Long bones

longer than wide
-femur, humerus, phalanges

2

short bones

length is approximately the width, cube shaped
-carpals, tarsals

3

flat bones

wide surface
-ribs, scapula, most cranial bones

4

irregular bones

numerous shapes, come in contact with more than 1 bone
- vertebrae, some facial bones like sphenoid

5

sesamoid bones

small, housed within tendons of a compression joint
-patella

6

osteon (haversian system)

cylinder-shaped unit

7

central canal(haversian canal; osteonic canal)

contains blood vessels and nerves

8

lamella

concentric ring of matrix around central canal

9

lacuna

small chamber for an osteocyte

10

bone extracellular matrix

collagen and calcium phosphate

11

canaliculus

minute tube containing cellular process

12

epiphysis

ends of long bones
- proximal(nearest torso)
-distal(farthest from torso)

13

epiphyseal plate

growth zone of hyaline cartilage

14

articular cartilage

on ends of epiphysis

15

diaphysis

shaft between epiphyses

16

periosteum

membrane around bone of dense irregular connective tissue (except where there is articular cartilage)

17

compact bone

forms diaphysis and epiphyseal surfaces

18

spongy bone (cancellous)

within epiphyses
-trabeculae: a structural lattice of plates in spongy bone

19

medullary cavity

hollow chamber

20

endosteum

thin membrane lining the medullary cavity made of reticular connective tissue

21

yellow bone marrow

occupies the medullary cavity and stores adipose tissue

22

red bone marrow

occupies spongy bone in some epiphyses and flat bones and produces blood cells