Oncogenes and tumor-suppressor genes have similar effects on cell division
Indicate whether the statement is true or false
FALSE
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The partition between the lateral ventricles is the
A. central canal. B. interventricular foramen. C. mesencephalic aqueduct. D. septum pellucidum. E. ventricular canal.
Cancer cells
A) are indistinguishable from normal body cells. B) have a slow mitotic rate. C) may exhibit metastasis. D) do not form neoplasms. E) generally form benign tumors.
Following a heart attack you tell a patient that he now has a myocardial infarction. You explain this as:
A) a blockage of his smallest cardiac veins (venae cordae minimae). B) an area of his myocardium that is necrotic. C) an area of his myocardium that is fibrillating. D) an area of his myocardium that is paradoxically contracting. E) an area of his myocardium that is edematous.
What causes the flow of lymph to slow within lymph nodes?
A) There are more afferent vessels than efferent vessels. B) Valves at the exit site regulate lymph flow, allowing only small amounts out at a time. C) Afferent vessels contract, restricting lymph flow. D) Afferent vessels are much larger in diameter than efferent vessels.