unit 7 and 8

Question 1

functions of the skeletal system

Answer 1

protection, support, storage, manufacturing, movement

Question 2

shapes of bones

Answer 2

long bones, short bones, sesamoid bones, irregular bones, flat bones

Question 3

osteocytes

Answer 3

mature bone cells

Question 4

osteoclasts

Answer 4

bone killers

Question 5

osteoblasts

Answer 5

bone formers

Question 6

epiphysis

Answer 6

end of bone

Question 7

cancellous (spongy bone)

Answer 7

protecting bones from compression and lattice of trabeculae

Question 8

compact bone

Answer 8

Osteons arranged in concentric circles called lamellae

Question 9

epiphyseal plate

Answer 9

between layers of cartilage (growth plate)

Question 10

periosteum

Answer 10

tough layer of connective tissues that is attached to ligaments

Question 11

diaphysis

Answer 11

long shaft of bone

Question 12

yellow marrow

Answer 12

stores fat

Question 13

medullary cavity

Answer 13

filled with red and yellow bone marrow

Question 14

nutrient artery

Answer 14

brings blood to bones

Question 15

articular cartilage

Answer 15

covers epiphysis, provides smooth movement and cushion from shock

Question 16

35% organic

Answer 16

collagen fibers, flexibility and tensile strength, protects bones from breaking

Question 17

65% inorganic

Answer 17

minerals, crystalline structure, gives bones strength and hardness

Question 18

fibrous joint

Answer 18

immovable or slightly movabl, held together by fibrous connective tissue

Question 19

synovial joint

Answer 19

highly movable, contain synovial fluid for frictionless movement

Question 20

cartilaginous joint

Answer 20

immovable or slightly movable, held together by cartilage

Question 21

pivot joint

Answer 21

ex: between vertebrae

Question 22

saddle joint

Answer 22

between carpals and metacarpals

Question 23

ball and socket joint

Answer 23

hip

Question 24

hinge joint

Answer 24

elbow

Question 25

gliding or plane joint

Answer 25

between tarsal bones

Question 26

condylar joint

Answer 26

between radius and carpal bones

Question 27

axial skeleton

Answer 27

central axis of the body, skull, ribs, sternum, and vertebrae (80 bones)

Question 28

appendicular skeleton

Answer 28

pectoral and pelvic girdles, bones of the arm, pelvis, and shoulders (126 bones)