What effect do pyrogens have in the body?
A) Pyrogens decrease body temperature.
B) Pyrogens induce fever, an increase in body temperature.
C) Pyrogens cause vasodilation during inflammatory reactions.
D) Pyrogens cause vasoconstriction during inflammatory reactions.
E) Pyrogens induce the production of anti-viral proteins in the cytoplasm of normal cells.
Answer: B
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The function of an atrium is to
A) store blood for use by the myocardial cells. B) pump blood to the lungs. C) pump blood into the systemic circuit. D) pump blood to the ventricle. E) collect blood then pump it to the ventricle.
The process that traps solids in the cell membrane and brings them into the cell is:
a. pinocytosis b. phagocytosis c. ion pumps d. none of the above
Hematocrit is
A) a clotting factor. B) a disease. C) the color of plasma. D) the percent of red blood cells in a blood sample.
What type of T cells directly kill cells infected by viruses and cancer cells in specific immunity?
A. T Memory cells B. T Regulatory cells C. T Helper cells D. T Cytotoxic cells