One component of brain death is defined as ________.
A. lack of spontaneous movement.
B. loss of reflexes.
C. a flat electroencephalogram (EEG).
Answer: C
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As blood is pumped into the arterial trunks past the semilunar valves, it
A. pushes against the cusps, forcing the valves open. B. fills the cusps, causing them to expand and open up for the flow of blood. C. fills the cusps, causing them to expand and block the backflow of blood. D. pushes against the cusps, forcing the valves closed. E. None of these answers is correct.
What are two examples of nitrogenous wastes that are excreted by the kidneys?
a) phosphates b) bicarbonate c) creatinine d) urea
In the cell-mediated immune response, T cells secrete ____, which activate additional components of the immune system
A. antibodies B. complement C. collagen D. cytokines E. histamine
Which of the following is the primary source of body heat?
A) Convection B) The sun C) Conduction D) Nutrient oxidation