In a patient with an abnormally leaky aortic valve, what would you expect?
A. Some backflow of blood into the aorta during ventricular diastole
B. Some backflow of blood into the aorta during ventricular ejection
C. Some backflow of blood into the left atrium during ventricular systole
D. Some backflow of blood into the left ventricle during ventricular diastole
E. Some backflow of blood into the left ventricle during ventricular ejection
Answer: D
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Which bone forms in the tendon of a muscle?
A. Pubis B. Scaphoid C. Calcaneus D. Patella E. Talus
CD8 markers are to ________ T cells as CD4 markers are to ________ T cells
A) suppressor; cytoxic B) cytoxic; helper C) helper; suppressor D) NK; cytoxic E) plasma; NK
The distance of the x-ray beam and the film is usually between _____ and ____ inches
Fill in the blank(s) with correct word
Once cytotoxic T cells are produced, which of the following is (are) consistent with their ability to attack intracellular viruses?
A. Most nucleated cells process antigens through the MHC class I mechanisms. B. Viral antigens are processed by the MHC class I mechanism and are presented to the cell surface. C. Cytotoxic T cells bind to MHC class I processed antigens. D. Cytotoxic T cells bound to the MHC class I processed antigens release lymphokines. E. All of these choices are correct.