Bone Growth Flashcards
1
Q
Dynamic
A
Bone is continuously laid down and reabsorbed
2
Q
Osteoclasts
A
Break down
Multiple nuclei
3
Q
Osteoblasts
A
Form bone
Produce osteoid
Mineralization of osteoid matrix
4
Q
Parathyroid Hormone (PTH)
A
Increased serum calcium
⬆️ osteoclasts
⬇️ osteoblasts
5
Q
Calcitonin
A
Decreases serum calcium
⬇️ osteoclasts
6
Q
Vitamin D
A
Regulates calcium and phosphorous
Promotes bone formation
Promotes imunosystem
7
Q
Growth
A
Occurs in epiphyseal growth plates
8
Q
Growth hormone
A
Elongation of bone
9
Q
Androgen
A
Promotes growth
10
Q
Estrogen
A
Closes growth plates
11
Q
Valgus
A
Leg deviates laterally
12
Q
Varus
A
Deviates medially
13
Q
Wolff’s Law
A
Shape of bone determines function
Actions can alter bone shape
Though growth is determined more by genetics
