Upon examination, a normal umbilical cord should contain:
a. one artery and one vein c. two arteries and one vein
b. one artery and two veins d. two arteries and two veins
C
Oxygenated blood comes from the placenta and enters the fetus at the umbilicus, through the umbilical vein. Blood moves through fetal circulation, and two umbilical arteries return blood to the placenta to be oxygenated.
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A 60-year-old man has presented to a clinic and is requesting screening for tumor markers after reading about them in a magazine. What can the clinician most accurately tell the man about the clinical use of tumor markers?
A) "Tumor markers are a very useful screening tool, but they only exist for a very few types of cancer." B) "Tests for the presence of tumor markers are limited by the fact that they are only accurate in the very early stages of cancer." C) "Tumor markers are an excellent screening tool, but it's only practical to test for those cancers that you're at risk of." D) "Tumor markers alone aren't enough to confirm whether you have cancer or not, so they're not a very useful screening tool."
Calculate the absolute neutrophil count for a child with a WBC = 15,000/mm3, neutrophils = 29%, and nonsegmented neutrophils (bands) = 29%. Record your answer in a whole number
_____________
An individual's feelings of environmental control will affect beliefs about compliance with a medical regimen. Which of the following is most likely to be true?
A. A person with internal locus of control will be more likely to feel personal actions that can influence future health. B. A person with external locus of control will be more likely to feel personal actions that can influence future health. C. A person who believes in fate and change as an important determinant of nature has an internal locus of control. D. A belief that the natural course of nature cannot be affected by individuals indicates belief in internal locus of control.
A patient has been court-ordered to take antipsychotic medications due to concerns of being a danger to self. In which situation might this action be justified? (Select all that apply.)
1. To alleviate suffering 2. In an emergency situation 3. When in the patient's best interest 4. To foster the therapeutic relationship 5. To care a patient who cannot care for himself