Page 350 - Color Atlas of Biochemistry

Connective tissue 341

A. Bone

Functions: Composition:
Mechanical support Inorganic Organic
Storage for Ca 2 Apatite Type I collagen
and phosphate Carbonate Proteoglycans
Synthesis of blood cells Water Phosphatases
Maturation of B cells

Hormones Hydroxyapatite Ca (PO ) (OH) 2
10
4 6
of the calcium
metabolism
Parathyroid hormone

Ca 2
in plasma

Ca 2
Calcitonin
O

Ca
Absence leads
to rickets Calcitriol P

OH

B. Teeth

Hardest substance Dental enamel 97%
in the body Dentin 70% Dextrans
Cement 65%
Jawbone 45%

Plaque
Crown
Dental Inorganic
plaque components

Dental
Bacterium
enamel
Neck

Protect Sugar Attack Dental
enamel
bacteria Saccharose apatite
Glucose
Fructose

Dextrans Anaerobic Acids
metabolism
Lactic acid
Propionic acid
Root Bacterium Acetic acid
Butyric acid
E.g.,
Streptococcus De-
mutans Calcium mineral-
salts ization

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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