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Microscopic inspection of hyaline cartilage would show prominent parallel bundles of collagen fibers.

A) True
B) False

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  Use the diagram above to answer the following questions. -Which letter indicates the region of the long bone comprised of trabecular bone? A)  A B)  B C)  C D)  D E)  E Use the diagram above to answer the following questions. -Which letter indicates the region of the long bone comprised of trabecular bone?


A) A
B) B
C) C
D) D
E) E

F) A) and B)
G) B) and E)

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Osteoblasts originate from


A) mesenchyme cells.
B) osteoblasts.
C) osteocytes.
D) blood stem cells.

E) A) and D)
F) All of the above

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All of the following are true regarding the composition of bone tissue except


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.

E) B) and C)
F) A) and B)

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  Use the diagram above to answer the following questions. -Which letter indicates the perforating, or Volkmann's canals which lie at right angles to central canals? A)  A B)  B C)  C D)  D E)  E Use the diagram above to answer the following questions. -Which letter indicates the perforating, or Volkmann's canals which lie at right angles to central canals?


A) A
B) B
C) C
D) D
E) E

F) A) and C)
G) A) and B)

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A long bone may be characterized by two diaphyses and one epiphysis.

A) True
B) False

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Within a long bone of the skeleton, the circumferential lamellae are located in the


A) trabeculae.
B) osteons.
C) external and internal regions of compact bone.
D) marrow cavity.

E) A) and B)
F) A) and C)

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A large, multinucleate cell with a ruffled border is an


A) osteoclast.
B) adipocyte.
C) osteocyte.
D) osteoblast.

E) B) and D)
F) C) and D)

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Blood vessels to the diaphysis move through the


A) epiphyseal plate.
B) articular cartilage.
C) foramen magnum.
D) nutrient foramen.

E) B) and C)
F) B) and D)

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An osteon is composed of


A) a cell body and a long, threadlike extension.
B) cartilage.
C) layers of bone lamellae surrounding a central canal.
D) interstitial lamellae.

E) None of the above
F) All of the above

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Which statement about growth of long bones is false?


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.

E) A) and B)
F) C) and D)

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Which of these is not a consequence of aging on bones and cartilage?


A) thinning of the articular cartilage.
B) decline in bone mass
C) decrease in completely-formed osteons
D) increase in chondroblast activity

E) B) and C)
F) A) and D)

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Comminuted fractures, in which the bone fragments into many pieces, are more common in the elderly. Anatomically, why would advanced age increase the risk for these kinds of fractures?


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.

E) All of the above
F) B) and C)

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Vertebrae and hip bones are examples of ________ bones.

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Which of the following is true regarding bone remodeling?


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.

E) A) and C)
F) A) and D)

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In osteoporosis, bone resorption occurs at faster rate than the deposition of new bone. All of these factors increase bone deposition and, therefore, help to prevent or treat osteoporosis except


A) weight-bearing exercise
B) adequate vitamin D intake
C) adequate calcium intake
D) parathyroid hormone replacement

E) A) and B)
F) B) and C)

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Which of these bony markings is correctly paired with its function?


A) trochanter - joint surface
B) foramen - site of muscle attachment
C) fissure - opening
D) crest - depression

E) All of the above
F) B) and D)

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Describe the three types of cartilage and their defining characteristics.

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Hyaline cartilage is the most abundant. ...

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Which of these is true regarding the skeleton of young children?


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.

E) A) and B)
F) A) and C)

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In osteoporosis, bone resorption occurs at faster rate than the deposition of new bone. Using your knowledge of bone cells, you reason that the cause of this must be an increase in activity and number of


A) osteoblasts
B) osteocytes
C) osteoclasts
D) osteoprogenitor cells

E) All of the above
F) None of the above

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