This figure illustrates the microscopic anatomy of spongy bone. What bone feature does number 4 indicate?
A. Osteocyte in lacuna
B. Trabeculae
C. Osteon
D. Canaliculus
E. Perforating canal
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Question 2) About 80 of the human skeleton is replaced yearly as a result of bone remodeling.
Indicate whether this statement is true or false.
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Question 3) Which is a change in bone architecture or mass related to aging?
A. Insufficient calcification
B. Demineralization
C. Reduction in the organic content of the matrix
D. Loss of flexibility and increase in brittleness
E. All of the choices are correct.
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Question 4) This figure shows the anatomy of compact bone. Which number is referring to a perforating (or Volkmann's) canal?
A. 1
B. 2
C. 3
D. 4
E. 5
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Question 5) The process of bone repair includes these steps:
a: Fracture hematoma forms
b: Bone is remodeled
c: Fibrocartilaginous callus forms
d: Bony callus forms
The correct chronological order for these steps is
A. a - c - d - b
B. a - b - d - c
C. c - d - b - a
D. d - a - b - c
E. b - a - c - d
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Question 6) Osteons run perpendicular to the diaphysis of a long bone.
Indicate whether this statement is true or false.
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Question 7) Which sex tends to lose more bone mass with aging?
A. Women
B. Men
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Question 8) Which is the definition for a greenstick fracture?
A. The bone is twisted as it fractures.
B. The fracture is at right angles to the long axis of the bone.
C. The bone is splintered into several fragments.
D. Only one side of the bone is broken; the other side is bent.
E. The fracture is at an oblique angle to the long axis of the bone.
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Question 9) Which is not involved in the process of bone repair following a fracture?
A. Fibroblasts produce collagen fibers to connect broken pieces of bone.
B. A fibrocartilaginous callus serves as a model for new bone growth.
C. Osteoclasts remove excess bone from the hard callus.
D. The fracture hematoma reorganizes to form a procallus.
E. No exceptions; all of the choices are involved in the process of bone repair.
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Question 10) With aging comes insufficient ossification of bone, a condition known as _________.
Fill in the blank with correct word.
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