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