Which neuron delivers sensations to the CNS?
A) first-order
B) second-order
C) third-order
D) fourth-order
E) sensory receptor
A
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Organic compounds must contain:
a. oxygen b. carbon-oxygen bonds c. carbon-hydrogen bonds d. none of the above
The blue color of superficial blood vessels results from
A. an increase in arterial blood circulating in the area. B. a lack of melanin in the area. C. the light-scattering properties of collagen. D. the superficial location of skin pigments. E. a lack of oxygen in the blood.
Name the paired central nervous system nuclei that adjust the pace of respiration
A) dorsal respiratory group and ventral respiratory group B) apneustic centers and pneumotaxic centers C) apneustic centers and dorsal respiratory group D) apneustic centers and ventral respiratory group E) pneumotaxic centers and ventral respiratory group
In which of the following systems of measurement are units of the same variable related to each other by factors of ten?
A. the English system B. the metric system C. both A and B D. neither A nor B