Which of the following is NOT a general function of the nervous system?
A. Initiation of the appropriate actions in response to the changes
B. Detection of all stimuli
C. Organization of the information for immediate and future use
D. Detection of internal and external environmental changes
Answer: B
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Regulatory T cells ________
A) aid B cells in antibody production B) may function in preventing autoimmune reactions C) decrease their activity as antigenic stimulus decreases D) release cytokines that increase the activity of cytotoxic T cells and activated B cells
The correct sequence of layers of a typical blood vessel, from superficial to deep, are ________
A) tunica media, tunica intima, tunica externa B) tunica media, tunica externa, tunica intima C) tunica externa, tunica media, tunica intima D) tunica externa, tunica intima, tunica media E) tunica intima, tunica media, tunica externa
Why do solutions for injection or infusion into people with low blood volume normally contain 150 mM NaCl?
A. This is a hypotonic solution, which will cause water movement into dehydrated blood cells. B. This is an isotonic solution, and the water in it will follow Na and Cl into the intracellular fluid compartment. C. This is a hypertonic solution, which will raise the blood volume and pressure more rapidly than an isotonic solution would. D. This is an isotonic solution, and NaCl will keep the added volume in the extracellular fluid compartment. E. NaCl are penetrating solutes, which will get them more quickly into blood cells to increase their volume.
What are the bumps on the surface of the tongue called?
A. Taste cells B. Lingual papillae C. Basal cells D. Taste papillae