skeletal system

Question 1

five main functions of skeletal system

Answer 1

support, protection, movement, storage, blood cell protection

Question 2

support (skeletal)

Answer 2

provides framework, gives place for muscles to attach

Question 3

protection (skeletal)

Answer 3

bones surround soft organs, makes blood cells

Question 4

movement (skeletal)

Answer 4

muscles attach to at least two bones and cross a joint

Question 5

storage (skeletal)

Answer 5

stores calcium, marrow, and collagen

Question 6

blood cell production (skeletal)

Answer 6

forms ALL blood cells in bone marrow

Question 7

bone tissue types

Answer 7

compact and spongy

Question 8

compact bone

Answer 8

osteons packed very tightly

Question 9

spongy bone

Answer 9

less dense due to trabeculae

Question 10

osteoblasts

Answer 10

bone forming cells

Question 11

osteocytes

Answer 11

mature bone cells

Question 12

osteoclasts

Answer 12

bone reabsorbing cells

Question 13

haversian canal

Answer 13

central canal with blood vessels

Question 14

lamellae

Answer 14

centric rings of bone matrix

Question 15

lacunae

Answer 15

spaces between lamellae with osteocytes

Question 16

canaliculi

Answer 16

small channels thru lacunae to haversian canal

Question 17

trabeculae

Answer 17

plates of bone next to cavities full of marrow

Question 18

ossification

Answer 18

bone formation

Question 19

intramembranous ossification

Answer 19

bone forming between membranes, typically flat bones

Question 20

endochondral ossification

Answer 20

bone forming in the cartilage, typically long bones

Question 21

mesenchymal cells (stem cells)

Answer 21

unspecified cell

Question 22

epiphyseal (growth) plate

Answer 22

long bones can tell you when you’re done growing

Question 23

long bones

Answer 23

longer than they are wide, mostly compact with spongey ends - femur, metacarpals

Question 24

short bones

Answer 24

cube shaped, mostly spongy with thin layer of compact - most carpals, most tarsals

Question 25

flat bones

Answer 25

thin, flat and curved, spongy sandwich with compact bread - rib, most of skull, sternum

Question 26

irregular bones

Answer 26

mostly spongy with thin layer of compact - pelvis, scapulae, all vertebrae

Question 27

sesamoid bones

Answer 27

small, rounded bone formed in a tendon, mostly spongy - only patellas

Question 28

diaphysis

Answer 28

shaft of long bone, compact surrounding medullary cavity

Question 29

epiphysis

Answer 29

ends of bone, spongy covered with hyaline cartilage

Question 30

periosteum

Answer 30

tough fibrous connective membrane with lots of nerves, blood vessels, and osteoblasts

Question 31

endosteum

Answer 31

connective membrane surrounding medullary canal with lots of osteoclasts

Question 32

articulation (joint)

Answer 32

where bone meets bone

Question 33

synarthroses

Answer 33

immovable joints, creates sutures - sutures in skull and sternum

Question 34

amphiarthroses

Answer 34

slightly movable joints, bones connected by hyaline or fibrocartilage - vertebrae with disks of fibrocart, ribs to sternum with hyaline

Question 35

diarthroses (synovial)

Answer 35

freely movable joints

Question 36

ball and socket joint

Answer 36

ball shaped end of one bone fits into cup shaped socket of another, gives widest range of motion - hip and shoulder joints