Which of the following is not a characteristic of childhood?
A. Developing a high degree of voluntary muscular control
B. Secondary teeth replacing primary teeth
C. Becoming reproductively functional
D. Establishing bowel control
Answer: C
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The renal process whereby substances are selectively transferred from the peritubular blood into the renal tubule is
a. filtration b. secretion c. reabsorption d. excretion e. none of these
Which structure can be palpated anterior to the cervix during a pelvic examination?
A. Cardinal ligament B. Ovary C. Pelvic diaphragm D. Bladder E. Uterinetube
The effectiveness of positive-pressure ventilations when treating a head-injured patient can ONLY be determined by:
A. immediate reassessment following the intervention. B. a neurosurgeon or emergency department physician. C. reassessing the patient's blood pressure after at least 10 minutes. D. noting a decrease in the heart rate during ventilations.
Cytotoxic T cells:
A. secrete perforin, which kills bacteria and viruses by perforating the membrane or coat that surrounds them. B. are activated by interleukin 1. C. require Class I MHC proteins to recognize foreign antigens. D. are converted to plasma cells when activated by MHC proteins. E. secrete proteins that neutralize bacterial toxins.