skeletal

Question 1

the scaffold against which muscles pull for movement and provides protection for delicate organs.

Answer 1

skeletal system

Question 2

bones that protect brain

Answer 2

skull

Question 3

provide support and shape. synthesize blood and and immune cells, store calcium, phosphate and lipids. is a dynamic tissue that is broken down when needed.

Answer 3

bones

Question 4

types of bone

Answer 4

long, short, flat, and irregular.

Question 5

most long bones make up the

Answer 5

arms and legs

Question 6

femur

Answer 6

upper leg bone and type of long bone

Question 7

humerus, ulna, radius, tibia, fibula, and femur are what type of bone

Answer 7

long bone

Question 8

marrow in the long bone and stores lipids

Answer 8

yellow marrow

Question 9

site of blood cell production and is found at ends of long bones

Answer 9

red bone marrow

Question 10

ends of long bones have this and it is where the bone lengthens if it is growing

Answer 10

growth plates

Question 11

have same width and length

Answer 11

short bones

Question 12

square bones of the wrist and ankle are what type of bones

Answer 12

short bones

Question 13

thin and flat and are used to protect vital organs

Answer 13

flat bones

Question 14

ribs are what type of bone and what do they protect

Answer 14

flat, protecting the heart and lungs

Question 15

T or F? Flat bones contain red bone marrow and produce blood cells

Answer 15

true

Question 16

hip bones and some of the skull are what type of bones

Answer 16

irregular bones

Question 17

where bones meet other bones

Answer 17

joints

Question 18

moveable joints

Answer 18

ball-and-socket

Question 19

what are some type of ball-and-socket joints

Answer 19

joints of the hips and shoulders

Question 20

what are some types of immoveable joints

Answer 20

joints in the skull that are fused together

Question 21

bones are attached to other bones through

Answer 21

ligaments

Question 22

only bone in the body not connected to other bones

Answer 22

hyoid bone which supports the tongue, held in place only by muscle

Question 23

is what the articulating surfaces of bone are covered by and it prevents them from grinding against each other

Answer 23

hyaline cartilage

Question 24

T or F? Synovial joints contain lubricating synovial fluid

Answer 24

true

Question 25

pivot, ball-and-socket, and hinge are what

Answer 25

synovial joints

Question 26

T or F? Synovial joints are not capable of movement

Answer 26

false

Question 27

where are bones synthesized

Answer 27

osteons

Question 28

calcium and phosphate-rich hydroxyapatite embedded in collagen matrix make up

Answer 28

osteons

Question 29

contains nerves and blood vessels and covers bone by being a fibrous sheath

Answer 29

periosteum

Question 30

T or F? bones do not need oxygen or nutrients

Answer 30

false

Question 31

two types of bone cells

Answer 31

multinucleate osteoclasts and mononucleate osteoblasts

Question 32

replace cartilage and secrete mineral deposits that form the matrix, the nonliving substance of the bone

Answer 32

osteoblasts

Question 33

T or F? Osteoblasts develop into osteocytes which strengthen bone tissue and carry out metabolic functions

Answer 33

true

Question 34

these break down bone minerals of the matrix

Answer 34

osteoclasts

Question 35

what happens if osteoclasts break down bone faster than osteoblasts deposit minerals? (or the excessive withdrawal of minerals from bone that causes bone’s rigidity to be lost)

Answer 35

bones become weakened and brittle which is called osteoporosis

Question 36

damages the cartilage that articulates between joints

Answer 36

arthritis

Question 37

results from a genetic defect in the collagen matrix, the gene that codes for a necessary collagen needed to form the matrix of the bone is missing and causes bones to break easily

Answer 37

brittle bone disease (osteogenesis imperfecta)

Question 38

what happens when a muscle receives a signal to contract from the CNS?

Answer 38

the muscle contracts, moving a bone connected to it

Question 39

tricep and bicep muscles control the movement of what

Answer 39

the elbow

Question 40

the contracting muscle is called the

Answer 40

prime mover

Question 41

T or F? muscles work in tandem in pairs as one pair relaxes the other contracts for one type of movement

Answer 41

true

Question 42

the relaxed muscle in the pair is called

Answer 42

antagonist

Question 43

which of the following best describes the purpose of hyaline cartilage in the skeletal system?

Answer 43

it reduces friction at joints