The inflammatory response
A. prevents the spread of an infection.
B. stimulates erythrocytes to leave the blood.
C. delays healing of damaged tissues.
D. depresses immunity.
E. is harmful and should be immediately reversed.
A
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________ is a condition in which chronic low levels of oxygen (due to lung disease or living in high altitudes) cause the body to produce more than normal amounts of erythrocytes to transport more efficiently the smaller amounts of available oxygen
A) Primary erythrocytopenia B) Primary polycythemia C) Secondary polycythemia D) Secondary erythrocytopenia
Which statement accurately describes alveolar and systemic gas exchanges?
A. In both alveolar and systemic gas exchange, oxygen diffuses toward the blood. B. In alveolar gas exchange oxygen diffuses out of the blood, but in systemic gas exchange it diffuses into the blood. C. In alveolar gas exchange oxygen diffuses into the blood, but in systemic gas exchange it diffuses out of the blood. D. In both alveolar and systemic gas exchange, oxygen diffuses out of the blood.
Which of the following statements regarding major histocompatibility proteins (MHCs) is TRUE?
A. Class I MHCs are found on all cells of the body except erythrocytes. B. Class II MHCs are normally found in the cell membranes of bacteria. C. Cytotoxic T cells require class II MHCs to recognize foreign antigens. D. All humans have identical sets of MHC proteins. E. MHC proteins are the same thing as antibodies.
The interthalamic adhesion connects the two portions of the
A. thalamus. B. epithalamus. C. hypothalamus. D. subthalamus. E. corpus callosum.