Correct Answer
verified
Multiple Choice
A) A
B) B
C) C
D) D
E) E
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verified
Multiple Choice
A) mesenchyme cells.
B) osteoblasts.
C) osteocytes.
D) blood stem cells.
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verified
Multiple Choice
A) 35% of bone tissue is composed of organic materials.
B) 65% of bone tissue is composed of inorganic hydroxyapatites.
C) elastin fibers are the most abundant organic components of bone.
D) the mixture of organic and inorganic components allows bone to be strong but not brittle.
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verified
Multiple Choice
A) A
B) B
C) C
D) D
E) E
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verified
True/False
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verified
Multiple Choice
A) trabeculae.
B) osteons.
C) external and internal regions of compact bone.
D) marrow cavity.
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verified
Multiple Choice
A) osteoclast.
B) adipocyte.
C) osteocyte.
D) osteoblast.
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verified
Multiple Choice
A) epiphyseal plate.
B) articular cartilage.
C) foramen magnum.
D) nutrient foramen.
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verified
Multiple Choice
A) a cell body and a long, threadlike extension.
B) cartilage.
C) layers of bone lamellae surrounding a central canal.
D) interstitial lamellae.
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Multiple Choice
A) The bone cannot grow longer once the epiphyseal plates are ossified.
B) The diaphysis becomes progressively thinner as the bone lengthens.
C) The epiphyses are pushed further from the center of the diaphysis.
D) The epiphyseal plates remain a constant thickness during growth.
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verified
Multiple Choice
A) thinning of the articular cartilage.
B) decline in bone mass
C) decrease in completely-formed osteons
D) increase in chondroblast activity
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verified
Multiple Choice
A) The decrease in organic, living, components in bone makes it more brittle.
B) Bone becomes more flexible with age.
C) Elderly individuals tend to do more activities resulting in strong twisting forces on their bones.
D) With age, bones acquire widespread microfractures that can result in fragmented fractures when excessive force is placed on the bone.
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verified
Short Answer
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verified
Multiple Choice
A) If osteoblasts are more active than osteoclasts, more bone will be resorbed than formed.
B) Osteoblasts function to break down bone.
C) Bone remodeling can occur to help us maintain adequate concentrations of calcium and phosphate in our blood.
D) Bone remodeling occurs at the same rate in all bones of the body.
Correct Answer
verified
Multiple Choice
A) weight-bearing exercise
B) adequate vitamin D intake
C) adequate calcium intake
D) parathyroid hormone replacement
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Multiple Choice
A) trochanter - joint surface
B) foramen - site of muscle attachment
C) fissure - opening
D) crest - depression
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verified
Essay
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View Answer
Multiple Choice
A) Their bones contain many ridges and prominent features
B) Their skeletons contain less hyaline cartilage than an adult.
C) As they use their muscles, bony markings and prominences develop in response to the added stress on the bones.
D) Their epiphysial plates were closed shortly after birth.
Correct Answer
verified
Multiple Choice
A) osteoblasts
B) osteocytes
C) osteoclasts
D) osteoprogenitor cells
Correct Answer
verified
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