2742534
Frage 1
Frage
What type of cells form bone?
Antworten
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Osteoblasts
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Osteoclasts
Frage 2
Frage
What type of cells resorb bone?
Antworten
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Osteoblasts
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Osteoclasts
Frage 3
Frage
Osteocytes are trapped osteoblasts that maintain the bone matrix.
Antworten
- True
- False
Frage 4
Frage
Immature bone that has a random collagenous structure is known as what?
Antworten
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Woven bone
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Lamellar bone
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Compact bone
Frage 5
Frage
Mature bone is known as what?
Antworten
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Lamellar bone
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Compact bone
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Woven bone
Frage 6
Frage
Cancellous (spongy) bone contains haversian canals.
Antworten
- True
- False
Frage 7
Frage
What is the main component of enamel?
Antworten
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Calcium hydroxyapatite
-
Magnesium hydroxyapatite
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Dentine
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Calcium
Frage 8
Frage
Dentine is innervated and can repair itself.
Antworten
- True
- False
Frage 9
Frage
Dental pulp contains post natal stem cells.
Antworten
- True
- False
Frage 10
Frage
Fluoride substitution in calcium hydroxyapatite promotes caries.
Antworten
- True
- False
Frage 11
Frage
Carbonate substitution in calcium hydroxyapatite promotes caries.
Antworten
- True
- False
Frage 12
Frage
What inorganic component does bone have?
Antworten
-
Carbonated hydroxyapatite
-
Calcium hydroxyapatite
Frage 13
Frage
What type of collagen do dentine, cementum and enamel all share?
Antworten
-
Type 1
-
Type 7
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Type 4
-
Type 3
Frage 14
Frage
Odontoblasts perform what function?
Antworten
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Produce dentine
-
Produce enamel
-
Produce cementum
Frage 15
Frage
Cementoblasts perform what function?
Antworten
-
Produce dentine
-
Produce cementum
-
Produce enamel
Frage 16
Frage
Ameloblasts perform what function?
Antworten
-
Produce dentine
-
Produce cementum
-
Produce enamel
Frage 17
Frage
Matrix vesicle mineralisation occurs how?
Antworten
-
Vesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation
-
Acid phosphoproteins bind to collagen -> promote crystal growth (scaffold)
Frage 18
Frage
Heterogenous nucleation mineralisation occurs how?
Antworten
-
Vesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation
-
Acid phosphoproteins bind to collagen -> promote crystal growth (scaffold)
Frage 19
Frage
How does mineralisation in enamel occur?
Antworten
-
Ameloblasts which secrete a matrix that acts as a scaffold
-
Odontoblasts which secrete a matrix that acts as a scaffold
Frage 20
Frage
Osteoporosis is when...
Antworten
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Bone loss > Bone deposition
-
Bone deposition > bone loss
Frage 21
Frage
What bone forms in a fracture site?
Antworten
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Woven
-
Lamellar
-
Cancellous
-
Compact
Frage 22
Frage
Fluorosis is characterised by...
Antworten
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High resistance to caries
-
Hypomineralised enamel
-
Rapid deciduous tooth loss in children
Frage 23
Frage
Osteogenesis imperfecta is caused by a mutation in type 1 collagen.
Antworten
- True
- False
Frage 24
Frage
Dentinogenesis imperfecta leads to hypomineralised enamel.
Antworten
- True
- False
Frage 25
Frage
Amelogenesis imperfecta leads to hypomineralised enamel.
Antworten
- True
- False
Frage 26
Frage
Dense connective tissue is found where?
Antworten
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Tendons
-
Ligaments
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Areolar tissue
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Adipose tissue
Frage 27
Frage
Loose connective tissue is found where?
Antworten
-
Tendons
-
Ligaments
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Adipose tissue
-
Reticular tissue
Frage 28
Frage
What is the function of fibroblasts?
Antworten
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Produces collagen
-
Produces cartilage
Frage 29
Frage
What is the function of chondrocytes?
Antworten
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Produce collagen
-
Produce cartilage
Frage 30
Frage
ECM is typically composed of what substances?
Antworten
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Collagen
-
Elastin
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Ground substance
-
Proteoglycans
Frage 31
Frage
A meshwork collagen arrangement takes what sort of load?
Antworten
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Compressional
-
Stretch
Frage 32
Frage
A longitudinal collagen arrangement is for?
Antworten
-
Compression
-
Stretch
Frage 33
Frage
Ground substance is mostly composed of what?
Antworten
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Water
-
Proteoglycans
-
Glycoproteins
-
Cartilage
Frage 34
Frage
What is hyaluronic acid and what is its function?
Antworten
-
A proteoglycan
-
A glycoprotein
-
Secretes water
-
Stores water
Frage 35
Frage
What is chondroitin sulphate and what is its function?
Antworten
-
A glycoprotein
-
A proteoglycan
-
Offers compressional resistance in cartilage
-
Gives flexibility in cartilage
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