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