Calcium balance

Question 1

Rachitis (rickets)

Answer 1

malformation of bones caused by the lack of vitamin-D that leads to a decreased absorption of calcium from the gut during development

Question 2

Osteoporosis

Answer 2

weakening of the bones due to a loss of minerals and organic components

Question 3

Osteoblast

Answer 3

bone forming progenitor cell

Question 4

Osteoclast

Answer 4

phagocyte digesting bone tissue allowing remodeling of bone

Question 5

Osteocyte

Answer 5

bone cell - osteoblasts are transformed into osteocytes

Question 6

Osteoid tissue

Answer 6

organic part of the bone matrix made up by fibers and other components

Question 7

Remodeling

Answer 7

the continuous degradation and rebuilding of the bone tissue

Question 8

Calcification

Answer 8

osteoid tissue becomes bone tissue by the precipitation of calcium salts

Question 9

Mineralization

Answer 9

osteoid tissue becomes bone tissue by the precipitation of calcium salts

Question 10

Ergocalciferol

Answer 10

vitamin D2

Question 11

Cholecalciferol

Answer 11

vitamin D3 (hormone)

Question 12

Calcitriol

Answer 12

hormone prepared from D2 and D3

Question 13

Parathormon

Answer 13

hormone of the parathyroid glands

Question 14

Calcitonin

Answer 14

hormone produced by C cells in the thyroid gland