Hormones, the skeleton and HRT Flashcards
1
Q
Which hormones have skeletal effects?
A
oestrogen parathyroid hormone vitamin D calcitonin fibroblast growth factor 23
2
Q
What are the 2 parts of bone?
A
cortical and trabecular
3
Q
What is cortical bone like?
A
sheet like structure
in the shaft of the bone
on outer part of head of long bone
made of osteons
4
Q
What is trabecular bone known as?
A
Spongy/cancellous
5
Q
What is trabecular bone like?
A
inside the heads of long bones
6
Q
Where do osteoclasts derive from?
A
haematopoeitic stem cells
7
Q
Where do osteoblasts derive from?
A
mesenchymal stem cells
8
Q
Where do osteocytes derive from?
A
mesenchymal stem cells
9
Q
What do haematopoeitic stem cells give rise to?
A
immune cells
osteoclasts
blood
10
Q
What are osteoblasts?
A
bone forming cells
11
Q
What do osteoblasts do?
A
secrete organic matrix (osteoid formed of collagen)
