U6 Skeletal: Growth and Fractures

Question 1

skeletal structure before bones

Answer 1

cartilage, fibrous tissue gradually become bone

Question 2

center of ossification

Answer 2

where osteoblasts produce matrix

Question 3

osteoblasts

Answer 3

bone developing cell

Question 4

fibroblasts

Answer 4

fibrous connective tissue cell, can specialize to osteoblasts

Question 5

fontanels

Answer 5

unossified tissue btw newborn bones

Question 6

epiphyseal discs

Answer 6

growth discs btw diaphysis and epiphases

Question 7

bone growth stops when

Answer 7

cartilage production stops and bone fully replaces

Question 8

osteoclasts

Answer 8

bone destroying cells

Question 9

function of osteoclasts

Answer 9

break down bone matrix with acids and enzymes, reabsorb minerals and aminos

Question 10

marrow canals form when

Answer 10

osteoclasts reabsorb

Question 11

long bone RBM replacement

Answer 11

RBM becomes YBM with development

Question 12

RBM is never replaced in

Answer 12

short, flat, irregular bones

Question 13

fracture

Answer 13

bone broken

Question 14

simple/closed

Answer 14

parts in normal position, minimal damage

Question 15

compound/open

Answer 15

parts moved, pierces skin

Question 16

greenstick

Answer 16

parts split longitudinally

Question 17

comminuted

Answer 17

2+ breaks create fragments

Question 18

impacted

Answer 18

parts forced together, many fragments

Question 19

pathologic/spontaneous

Answer 19

parts broken w/o trauma, especially from disorders

Question 20

osteomyelitis

Answer 20

infection of bone

Question 21

bone repair after damage

Answer 21

osteoclasts reabsorb damaged bone, osteblasts make new matrix

Question 22

bone healing rate

Answer 22

quick healing bc of good blood supply