Cytotoxic T-lymphocytes that have killed a foreign cell may transform into
A. helper T-lymphocytes.
B. memory B-lymphocytes.
C. plasma cells.
D. natural killer cells.
E. None of the choices is correct.
Answer: E
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What is the function of uterine tube peg cells?
A) secretion of estrogen B) secretion of progesterone C) propel the oocyte to the uterus D) secrete nutrient-rich fluid E) secrete mucus
Which of the following does NOT contain a mucosa-associated lymphatic tissue?
A) appendix B) tonsil C) Peyer's patch D) thymus
When ventricular pressure exceeds atrial pressure, the
A. ejection occurs. B. atria pump blood into the ventricles. C. ventricle is in diastole. D. blood is pumped into the atrium. E. AV valves close.
Movement of the endolymph in the semicircular canals
A) produces a rushing sound. B) allows us to hear low tones. C) signals rotational movements. D) signals body position with respect to gravity. E) signals linear acceleration.