Lesson 6

Question 1

on going replacement of old bone tissue by new bone tissue

Answer 1

bone remodeling

Question 2

removal of minerals and collagen fibers from bone by osteoclasts

Answer 2

Bone resorption

Question 3

attaches tightly to the bone surface at the endosteum or periosteum during the process of bone resorption

Answer 3

osteoclasts

Question 4

enhances synthesis of the proteins needed to build new bone

Answer 4

Nutrition

Question 5

from pancreas that promotes bone growth by increasing the synthesis of bone proteins

Answer 5

insulin

Question 6

destruction of bone extracellular matrix

Answer 6

bone resorption

Question 7

addition of minerals and clagen fibers to bone by osteoblasts

Answer 7

bone deposition

Question 8

results in formation of bone extracellular matrix

Answer 8

bone deposition

Question 9

about how many percent of the total bone mass in the body is being remodeled

Answer 9

5%

Question 10

bone remodeling may be triggered by factors such as

Answer 10

exercise, sedentary lifestyle, changes in diet

Question 11

Process of Bone Resorption

Answer 11

Quiescent
Activation
Resorption
Formation
Mineralisation

Question 12

Factors affecting bone growth and bone remodeling

Answer 12

MVH
- intake of Minerals
- intake of Vitamins
- Hormones

Question 13

necessary during bone remodeling

Answer 13

Minerals, like calcium and phosphorus as well as magnesium, flouride, maganese

Question 14

stimulates activity of osteoblasts

Answer 14

Vitamin A

Question 15

needes for synthesis of collagen

Answer 15

Vitamin C

Question 16

main bone protein

Answer 16

Collagen

Question 17

• produced by the liver and bone tissue
• stimulate osteoblasts, promotes cell division

Answer 17

IGFs - Insulin like growth factors

Question 18

from thyroid gland

Answer 18

thyroid hormones (T3 and T4)

Question 19

• from pancreas

Answer 19

Insulin

Question 20

• causes dramatic effect on bone growth

Answer 20

sex hormones

Question 21

contribute to bone remodeling by slowing bone resorption of old bone and promoting deposition of new bone

Answer 21

sex hormones

Question 22

programmed death of osteoclasts

Answer 22

apoptosis

Question 23

stimulate bone growth

Answer 23

insulin like growth factors
human growth hormone
thyroid hormones
insulin

Question 24

needed fo bone growth and maintenance

Answer 24

dietary minerals - ca and phosphorus
vitamins - A, C, D, K and B12