PHSI3011 05-1 Bone and Teeth - Structure & Function

Michael Jardine
Quiz by Michael Jardine, updated more than 1 year ago
Michael Jardine
Created by Michael Jardine almost 3 years ago
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PHSI3011 05-1 Bone and Teeth - Structure & Function
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Question 1

Question
Trabecular vs cortical bone. Trabecular AKA [blank_start]__________[blank_end]; Cortical AKA [blank_start]__________[blank_end].
Answer
  • Cancellous
  • Compact

Question 2

Question
Bone matrix composition. Which of the following [mainly] gives bones its TENSILE strength:
Answer
  • Collagen
  • Non-collagenous proteins
  • Bone mineral (Calcium & Phosphate as hydroxyapatite)

Question 3

Question
Bone matrix composition. Which of the following [mainly] gives bones its COMPRESSIVE strength:
Answer
  • Collagen
  • Non-collagenous protein
  • Bone mineral (Calcium & Phosphate as hydroxyapatite)

Question 4

Question
90% of bone cells are [blank_start]__________[blank_end] and are [blank_start]__________[blank_end].
Answer
  • Osteocytes
  • Osteoblasts
  • Lining Cells
  • Collagen
  • Long-lived
  • Short-lived
  • Osteoclasts

Question 5

Question
Which of the following are involved in FORMING bone:
Answer
  • Osteoblasts
  • Osteocytes
  • Lining Cells
  • Osteoclasts
  • Collagen

Question 6

Question
Which of the following are involved in RESORBING bone:
Answer
  • Osteoblasts
  • Osteoclasts
  • Osteocytes
  • Lining Cells
  • Collagen

Question 7

Question
Which bone cells are the ones that are embedded in the bone matrix and involved in sensing mechanical forces (and/or apoptosing to trigger resorption)?
Answer
  • Osteocytes
  • Osteoclasts
  • Osteoblasts
  • Lining Cells

Question 8

Question
OPG = ??
Answer
  • OsteoProteGerin
  • OsteoProGeterin
  • OsteoProGerin
  • OsteoProteGeterin

Question 9

Question
Classical Wnt pathway in bone. Wnt pathway allows [blank_start]__________[blank_end] to control bone mass – e.g. more mechanical force, more bending of bone, sensed by [above], less production of Sclerostin, more bone added.
Answer
  • Osteocytes
  • Osteoclasts
  • Osteoblasts
  • Lining Cells

Question 10

Question
RANKL = ??
Answer
  • Receptor Activator of Nuclear factor Kappa-B Ligand
  • Receptor Activator of Necrotic factor Kappa-B Ligand
  • Receptor Activator of Nuclear factor Kappa-A Ligand
  • Receptor Activator of Necrotic factor Kappa-A Ligand

Question 11

Question
Bone formation depends [most directly] on [blank_start]__________[blank_end] (numbers, activity, lifespan); Bone resorption depends [most directly] on [blank_start]__________[blank_end] (numbers, activity, lifespan).
Answer
  • Osteoblast
  • Osteoclast
  • Osteocyte
  • Lining Cell

Question 12

Question
Match the following bone* cells to their function: Amelobasts = [blank_start]__________[blank_end]; Cementoblasts = [blank_start]__________[blank_end]; Odontoblasts = [blank_start]__________[blank_end]; Osteoblasts = [blank_start]__________[blank_end];
Answer
  • Enamel
  • Cementum
  • Dentine
  • Alveolar bone

Question 13

Question
Cells of teeth: Ameloblasts lay down [blank_start]__________[blank_end], are [blank_start]__________[blank_end]; and [blank_start]__________[blank_end] have (do?) regeneration.
Answer
  • Enamel
  • Dentine
  • Cementum
  • Big closely-packed hydroxyapatite crztlz
  • Collagen fibres
  • Don't
  • Do

Question 14

Question
Cells of teeth: Cementoblasts lay down [blank_start]__________[blank_end]; are [blank_start]__________[blank_end];.
Answer
  • Cementum
  • Dentine
  • Enamel
  • Collagen fibres in periodontal ligament
  • Big closely packed hydroxyapatite crztlz

Question 15

Question
Which of the following are used for assessing bone?
Answer
  • Bone Densitometry
  • Ultrasound
  • Biopsy
  • Hitting with a sledgehammer and seeing whether it breaks (hint: technically true)

Question 16

Question
What are caries?
Answer
  • Cavities, possibly arising from bacteria and/or food
  • Not “cavities”, but possibly arising from bacteria and/or food
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