Skeletal System

Question 1

Functions of the bone?

Answer 1

Support & protect
Provide points of attachment
House blood producing cells
Store inorganic salts

Question 2

Bones shapes

Answer 2

Long bone
Short bone
Flat bone
Irregular bone

Question 3

Long bone

Answer 3

Long and narrow

Have an expanded end

Question 4

Short bone

Answer 4

Cubelike

Sesamoid (round) bones

Question 5

Flat bones

Answer 5

Platelike, with broad sufaces

Question 6

Irregular bone

Answer 6

Variety of shapes

Don’t fit the other categories

Question 7

Parts of the long bone

Answer 7

Epiphysis, diaphysis, metaphysis, articular cartilage, periosteum, medullary cavity, and bone marrow

Question 8

Epiphysis

Answer 8

Expanded end

Question 9

Diaphysis

Answer 9

Bone shaft

Question 10

Metaphysis

Answer 10

Between epiphysis and diaphysis

Question 11

Articular cartilage

Answer 11

Covers epiphysis

Question 12

Periosteum

Answer 12

Encloses bone

Question 13

Medullary cavity

Answer 13

Hollow chamber in diaphysis

Contains marrow

Question 14

Bone marrow

Answer 14

Red or yellow marrow

Question 15

Name of a mature bone cell

Answer 15

Osteocyte

Question 16

Name of the chamber occupied by osteocytes

Answer 16

Lacunae

Question 17

Tiny passageway

Answer 17

Canaliculi

Question 18

Extracellular matrix

Answer 18

Fills the spcae between the cells

Question 19

Collagen fibers

Answer 19

Gves tensile strength to the bone, resillience

Inorganic salt make bone

Question 20

2 types of long bones

Answer 20

Compact and spongy bone

Question 21

Compact bone

Answer 21

Consists of units called osteons(unit of bone)
Weight-bearing
Resist compression

Question 22

Spongy bone

Answer 22

Consists of plates called trabeculae

Nutrients diffuse through canaliculi

Question 23

Compact bone part 2

Answer 23

Consist of osteons
Lamellae:layers of matrix around central canal
Osteocytes can pass nutrients through the canaliculi

Question 24

2 ways of bones to be formed

Answer 24

Intramembranous bones(membrane)
Endochondral bones(cartilage)

Question 25

Intramembranous ossification

Answer 25

Flat skull, bones forming sheets, primitive connective tissue

Question 26

Endochondral ossification

Answer 26

Longbone, most of skeletin from hyaline cartilage models

Question 27

Intramembranous bones

Answer 27

Originate within sheetlike layers of connective tissue
Broad, flat bones
Ex. Skull, clavicles, and sternum

Question 28

Intramembranous ossification pt 2

Answer 28

• Replacing connective tissue to form bone
• Surface will form the periosteium
• Inside will diposit compact bone on top of the Spongy bone