Osteoporosis Flashcards
OP most common in
Women
Morbidity and mortality in men and women
Men: 30%
Women 9%
Collagen is ___ and provides
Protein
Soft framework
Calcium phosphate is ___
What does it do?>
Mineral
Add strength and harden framwork
Cortical bone characteristics
Outer shell
Shaft
80% of skeletal mass
Cancellous/spongy trabecular bone characteristics
Inner part of bone, end of long bone
20% mass
Process of bone remodeling is
Resorbtion and formation of bone
Cells that break bone down
Whats lifespan?
Osteoclasts
3 weeks
Cells that form new bone and life span
Osteroblasts
3 months
What responds to mechanical strain by sending signals to osteoblasts to increase bone formation or osteoclasts to remove?
Osteocytes
How does osteoporosis occur?
Mismatch b/w osteoblasts/clasts
What are other factors of osteoporosis
Change in hormone postmenopause
Low calcium and vitamin D
Largest amount of bone tissue person has in their life
Peak bone mass
Peak bone mass attained @ what ages?
18 girls
19/20 guys
Growth spur occurs at what ages and how much of total bone mass is accumulated in this period?
11-14 for girls
13-17 for guys
40%