Sleepwalking may occur during ________
A) NREM stage 4
B) NREM stage 1
C) NREM stage 2
D) REM
A
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The second signal during B-lymphocyte activation involves stimulation from
A. IL-2 released by cytotoxic T-lymphocytes. B. IL-4 released by helper T-lymphocytes. C. bradykinin released by antigen-presenting cells. D. antibodies released by antigens.
Which muscle do you contract when you compress the anterior abdominal wall?
A. External oblique B. Internal oblique C. Transversus abdominis D. Rectus abdominus E. All of these
During platelet plug formation,
A. platelets stick to the exposed collagen fibers of injured vessels. B. activated platelets release fibrinogen. C. thrombin is released from endothelial cells. D. vitamin K production increases. E. platelets multiply.
The prenatal period during which the major organ systems form is the
A. fetal period. B. germinal period. C. embryonic period. D. neonatal period.