Quiz
NMS Set 5 Quiz - Bones, teeth and connective tissue.
Perguntas do quiz (35)
1What type of cells form bone?
- AOsteoblasts
- BOsteoclasts
2What type of cells resorb bone?
- AOsteoblasts
- BOsteoclasts
3Osteocytes are trapped osteoblasts that maintain the bone matrix.
- AVerdadeiro
- BFalso
4Immature bone that has a random collagenous structure is known as what?
- AWoven bone
- BLamellar bone
- CCompact bone
5Mature bone is known as what?
- ALamellar bone
- BCompact bone
- CWoven bone
6Cancellous (spongy) bone contains haversian canals.
- AVerdadeiro
- BFalso
7What is the main component of enamel?
- ACalcium hydroxyapatite
- BMagnesium hydroxyapatite
- CDentine
- DCalcium
8Dentine is innervated and can repair itself.
- AVerdadeiro
- BFalso
9Dental pulp contains post natal stem cells.
- AVerdadeiro
- BFalso
10Fluoride substitution in calcium hydroxyapatite promotes caries.
- AVerdadeiro
- BFalso
11Carbonate substitution in calcium hydroxyapatite promotes caries.
- AVerdadeiro
- BFalso
12What inorganic component does bone have?
- ACarbonated hydroxyapatite
- BCalcium hydroxyapatite
13What type of collagen do dentine, cementum and enamel all share?
- AType 1
- BType 7
- CType 4
- DType 3
14Odontoblasts perform what function?
- AProduce dentine
- BProduce enamel
- CProduce cementum
15Cementoblasts perform what function?
- AProduce dentine
- BProduce cementum
- CProduce enamel
16Ameloblasts perform what function?
- AProduce dentine
- BProduce cementum
- CProduce enamel
17Matrix vesicle mineralisation occurs how?
- AVesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation
- BAcid phosphoproteins bind to collagen -> promote crystal growth (scaffold)
18Heterogenous nucleation mineralisation occurs how?
- AVesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation
- BAcid phosphoproteins bind to collagen -> promote crystal growth (scaffold)
19How does mineralisation in enamel occur?
- AAmeloblasts which secrete a matrix that acts as a scaffold
- BOdontoblasts which secrete a matrix that acts as a scaffold
20Osteoporosis is when...
- ABone loss > Bone deposition
- BBone deposition > bone loss
21What bone forms in a fracture site?
- AWoven
- BLamellar
- CCancellous
- DCompact
22Fluorosis is characterised by...
- AHigh resistance to caries
- BHypomineralised enamel
- CRapid deciduous tooth loss in children
23Osteogenesis imperfecta is caused by a mutation in type 1 collagen.
- AVerdadeiro
- BFalso
24Dentinogenesis imperfecta leads to hypomineralised enamel.
- AVerdadeiro
- BFalso
25Amelogenesis imperfecta leads to hypomineralised enamel.
- AVerdadeiro
- BFalso
26Dense connective tissue is found where?
- ATendons
- BLigaments
- CAreolar tissue
- DAdipose tissue
27Loose connective tissue is found where?
- ATendons
- BLigaments
- CAdipose tissue
- DReticular tissue
28What is the function of fibroblasts?
- AProduces collagen
- BProduces cartilage
29What is the function of chondrocytes?
- AProduce collagen
- BProduce cartilage
30ECM is typically composed of what substances?
- ACollagen
- BElastin
- CGround substance
- DProteoglycans
31A meshwork collagen arrangement takes what sort of load?
- ACompressional
- BStretch
32A longitudinal collagen arrangement is for?
- ACompression
- BStretch
33Ground substance is mostly composed of what?
- AWater
- BProteoglycans
- CGlycoproteins
- DCartilage
34What is hyaluronic acid and what is its function?
- AA proteoglycan
- BA glycoprotein
- CSecretes water
- DStores water
35What is chondroitin sulphate and what is its function?
- AA glycoprotein
- BA proteoglycan
- COffers compressional resistance in cartilage
- DGives flexibility in cartilage
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