standard skeleton

Question 1

how many bones are in the adult skeleton

Answer 1

206

Question 2

how many bones do babies have

Answer 2

300 (as time goes by their bones fuse together)

Question 3

what percentage of body mass do bones make up

Answer 3

14%

Question 4

make up of a bone

Answer 4

bone cells, fat cells, blood vessels, but mostly calcium

Question 5

functions of the skeletal system

Answer 5

structure (rigid frame work), protection(brain and organs), movement (lever system which muscles can attach), growth center for cells, reservoir of minerals (calcium and phosphorus storhouse)

Question 6

axial skeleton

Answer 6

consits of 80 bones and is made up of the skull, spine, and ribs

Question 7

skull

Answer 7

cranium- 8 bones
face- 14 bones
ossicles- 6 bones (3 per side)

Question 8

hyoid bone

Answer 8

supports tounge and porms part of the lanrynx

Question 9

vertebral column

Answer 9

33 vertebrae, some are fused together (on average 26 can move)

Question 10

sternum

Answer 10

3 bones fused together

Question 11

ribs

Answer 11

12 pairs-24 total

Question 12

appendicualr skeleton

Answer 12

includes movable limbs and their supporting structure, conists of 126 bones and is divided into 6 major regions

Question 13

6 major regions of the appendicular skeleton

Answer 13

pectoral gridel
arms and forearms
hands
pelvis
thighs and legs
feet and ankels

Question 14

composition of the human skeleton (tissue)

Answer 14

two types, cartilage and bone

Question 15

cartilage

Answer 15

Cartilage forms the skeleton of a developing fetus, gradually replaced by bone

Some cartilage remains on the articular surface of most bones to allow for flexible connection between bones

Question 16

bone landmarks

Answer 16

every bone in the human body have landmarks

A landmark is a ridge, bump, grove, depression, or prominence on the surface of the bone that serves as a guide to locations of other body structures

Question 17

anatomy of a long bone (two regions)

Answer 17

diaphysis (shaft), and the epiphysis (ends)

Question 18

medullary cavity

Answer 18

Found inside the shaft
Filled with red and yellow bone marrow
Red Marrow is responsible for blood cells and platelet formation
Yellow marrow- contains fat and stem cells

Question 19

compact bone

Answer 19

Underneath periosteum
Responsible for the bones structural integrity

Question 20

Cancellous bone

Answer 20

Beneath the compact bone
Filled with marrow in its small cavity-like spaces
Also distributes forces placed on the bone

Question 21

periosteum

Answer 21

`covers entire length
Site of attachment for ligaments and tendons

Question 22

epiphyseal plates

Answer 22

Occur at various locations at the epiphyses of long bones
Growth plates
Appear as black spaces between the diaphysis and epiphysis on x-rays

Question 23

epiphysis lines

Answer 23

appear once plates have fused/come together (no more grwoth and appear as a solid epiphysis on x-rays

Question 24

major bones in the body

Answer 24

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