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Flashcards in skeletal system Deck (23):
1

functions of the skeletal system

protects organs ( ribs sternum skull), place for muscles to attach; stores calcium; makes blood (hematopoiesis)

2

what are the type of varieties of bones

long (arms and legs), short (toes and fingers), flat (skull)
irregular (kneecap)

3

what is the function of long bones

support

4

what is the function of short bones

mobility

5

what is the function of flat bones

protection

6

how many bones are in the human body

206

7

where is the greatest number of bones

in the hands and feet

8

are bones alive or dead? why?

alive because they need to grow and heal

9

periosteium

saran wrap covering over the whole bone; contains blood vessels (PROTECTION)

10

cartilage

bendable tissue at the end of the bone; articular; slow healing PROTECTION

11

what does articular mean

few blood vessels

12

compact bone

solid; no holes; middle of the bone ; high in calcium

13

spongy bone

has holes; ends of the bone; low in calcium

14

red marrow

makes blood; center of bone

15

yellow marrow

makes fat; end of the bone

16

ossification

process of cartilage turning into bone

17

what is the soft spot

part on infants head that remains soft until 2yrs

18

osteoclasts

eat cartilage and primitive bone appears

19

osteoblasts

primitive bone

20

third step of ossification

osteoblasts mature into osteocytes

21

primary ossification center

diaphysis (center)

22

secondary ossification center

epiphysis (ends)

23

epiphyseal disk

last place for cartilage to turn into bone (growth plate)