Ewing sarcoma originates from:
a. osteoblasts.
b. epithelial cells.
c. the spleen.
d. the bone marrow.
ANS: D
Ewing sarcoma originates from the bone marrow. This tumor does not originate from osteoblasts, epithelial cells, or the spleen.
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Which of the following statements is NOT true about incident reports?
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Which of the following covers employees injured at work?
A. TRICARE B. Medicaid C. Medicare D. Worker's compensation
The membrane that lines the medullary canal is the ____
A) periosteum B) endosteum C) epiphysis D) diaphysis