A major predictor of poor prognosis for Ewing sarcoma is:
a. age of onset.
b. size of tumor.
c. presence of metastasis.
d. gender of child.
ANS: C
Metastasis at diagnosis is another poor prognostic indicator, with 5-year survival rate dropping to under 40%.
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The primary function of the heart is:
a. transferring oxygen to the cells. b. pumping blood throughout the body. c. oxygenating blood in the lungs. d. maintaining the volume of blood.
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Neurons contain several axons to carry messages to the cell body
Indicate whether the statement is true or false
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