Which of the following properly describes "mean arterial pressure"?
A) Mean arterial pressure is generated by the closure of the aortic semilunar valve.
B) Mean arterial pressure is generated as a result of the force exerted by the stretch and recoil of the arteries.
C) Mean arterial pressure is generated as blood is ejected from the left ventricle.
D) Mean arterial pressure ensures that blood is pushed from the heart and through the systemic circulation.
D
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HIV targets ________.
A. natural killer cells B. B cells C. helper T cells D. dendritic cells
Which of the following is NOT a function of proteins?
A. Storing chemical energy B. Generating muscle contractions C. Providing structural support D. Serving as chemical messengers
Antibodies that attack pathogens are produced by ________.
A. neutrophils B. T lymphocytes C. Plasma cells D. monocytes E. B lymphocytes
Mature bones are remodeled throughout life via a process known as ________.
A. appositional growth B. interstitial growth C. endochondral ossification D. intramembranous ossification E. metaphysical growth