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NMS Set 5 Quiz - Bones, teeth and connective tissue.

Question 1 of 35

1

What type of cells form bone?

Select one of the following:

  • Osteoblasts

  • Osteoclasts

Explanation

Question 2 of 35

1

What type of cells resorb bone?

Select one of the following:

  • Osteoblasts

  • Osteoclasts

Explanation

Question 3 of 35

1

Osteocytes are trapped osteoblasts that maintain the bone matrix.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 35

1

Immature bone that has a random collagenous structure is known as what?

Select one of the following:

  • Woven bone

  • Lamellar bone

  • Compact bone

Explanation

Question 5 of 35

1

Mature bone is known as what?

Select one of the following:

  • Lamellar bone

  • Compact bone

  • Woven bone

Explanation

Question 6 of 35

1

Cancellous (spongy) bone contains haversian canals.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 35

1

What is the main component of enamel?

Select one of the following:

  • Calcium hydroxyapatite

  • Magnesium hydroxyapatite

  • Dentine

  • Calcium

Explanation

Question 8 of 35

1

Dentine is innervated and can repair itself.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 35

1

Dental pulp contains post natal stem cells.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 35

1

Fluoride substitution in calcium hydroxyapatite promotes caries.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 35

1

Carbonate substitution in calcium hydroxyapatite promotes caries.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 35

1

What inorganic component does bone have?

Select one of the following:

  • Carbonated hydroxyapatite

  • Calcium hydroxyapatite

Explanation

Question 13 of 35

1

What type of collagen do dentine, cementum and enamel all share?

Select one of the following:

  • Type 1

  • Type 7

  • Type 4

  • Type 3

Explanation

Question 14 of 35

1

Odontoblasts perform what function?

Select one of the following:

  • Produce dentine

  • Produce enamel

  • Produce cementum

Explanation

Question 15 of 35

1

Cementoblasts perform what function?

Select one of the following:

  • Produce dentine

  • Produce cementum

  • Produce enamel

Explanation

Question 16 of 35

1

Ameloblasts perform what function?

Select one of the following:

  • Produce dentine

  • Produce cementum

  • Produce enamel

Explanation

Question 17 of 35

1

Matrix vesicle mineralisation occurs how?

Select one of the following:

  • Vesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation

  • Acid phosphoproteins bind to collagen -> promote crystal growth (scaffold)

Explanation

Question 18 of 35

1

Heterogenous nucleation mineralisation occurs how?

Select one of the following:

  • Vesicles accumulate Ca2+ and P -> Internal surface mineralisation -> Rupturing (release of crystal) -> accumulation

  • Acid phosphoproteins bind to collagen -> promote crystal growth (scaffold)

Explanation

Question 19 of 35

1

How does mineralisation in enamel occur?

Select one of the following:

  • Ameloblasts which secrete a matrix that acts as a scaffold

  • Odontoblasts which secrete a matrix that acts as a scaffold

Explanation

Question 20 of 35

1

Osteoporosis is when...

Select one of the following:

  • Bone loss > Bone deposition

  • Bone deposition > bone loss

Explanation

Question 21 of 35

1

What bone forms in a fracture site?

Select one of the following:

  • Woven

  • Lamellar

  • Cancellous

  • Compact

Explanation

Question 22 of 35

1

Fluorosis is characterised by...

Select one of the following:

  • High resistance to caries

  • Hypomineralised enamel

  • Rapid deciduous tooth loss in children

Explanation

Question 23 of 35

1

Osteogenesis imperfecta is caused by a mutation in type 1 collagen.

Select one of the following:

  • True
  • False

Explanation

Question 24 of 35

1

Dentinogenesis imperfecta leads to hypomineralised enamel.

Select one of the following:

  • True
  • False

Explanation

Question 25 of 35

1

Amelogenesis imperfecta leads to hypomineralised enamel.

Select one of the following:

  • True
  • False

Explanation

Question 26 of 35

1

Dense connective tissue is found where?

Select one or more of the following:

  • Tendons

  • Ligaments

  • Areolar tissue

  • Adipose tissue

Explanation

Question 27 of 35

1

Loose connective tissue is found where?

Select one or more of the following:

  • Tendons

  • Ligaments

  • Adipose tissue

  • Reticular tissue

Explanation

Question 28 of 35

1

What is the function of fibroblasts?

Select one of the following:

  • Produces collagen

  • Produces cartilage

Explanation

Question 29 of 35

1

What is the function of chondrocytes?

Select one of the following:

  • Produce collagen

  • Produce cartilage

Explanation

Question 30 of 35

1

ECM is typically composed of what substances?

Select one or more of the following:

  • Collagen

  • Elastin

  • Ground substance

  • Proteoglycans

Explanation

Question 31 of 35

1

A meshwork collagen arrangement takes what sort of load?

Select one of the following:

  • Compressional

  • Stretch

Explanation

Question 32 of 35

1

A longitudinal collagen arrangement is for?

Select one of the following:

  • Compression

  • Stretch

Explanation

Question 33 of 35

1

Ground substance is mostly composed of what?

Select one or more of the following:

  • Water

  • Proteoglycans

  • Glycoproteins

  • Cartilage

Explanation

Question 34 of 35

1

What is hyaluronic acid and what is its function?

Select one or more of the following:

  • A proteoglycan

  • A glycoprotein

  • Secretes water

  • Stores water

Explanation

Question 35 of 35

1

What is chondroitin sulphate and what is its function?

Select one or more of the following:

  • A glycoprotein

  • A proteoglycan

  • Offers compressional resistance in cartilage

  • Gives flexibility in cartilage

Explanation

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