When all three cone populations are stimulated equally, we perceive
A) red.
B) blue.
C) green.
D) white.
E) black.
D
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What are the three main anatomical differences between the parasympathetic and sympathetic nervous systems?
What will be an ideal response?
All of the following are factors that influence synovial joint stability EXCEPT?
A) structure and shape of the articulating bone B) strength and tension of joint ligaments C) arrangement and tension of the muscles D) number of bones in the joint
Exposure to ultraviolet light causes the skin to darken by stimulating the
A. breakdown of melanin. B. activity of the keratinocytes. C. breakdown of carotene. D. buildup of bilirubin. E. activity of the enzyme tyrosinase.
Which cells of the lymph node perform a surveillance role?
A. T cells B. B cells C. Macrophages D. Reticular cells