In a cephalized invertebrate, the system that transmits "efferent" impulses from the anterior ganglion to distal segments is the _____
A) central nervous system
B) peripheral nervous system
C) autonomic nervous system
D) parasympathetic nervous system
B
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A loss of 90% of the population in the Pingelap atoll from a typhoon in 1775 resulted in a high percentage of the current population being affected by achromatopsia. As a result, all of these affected individuals _____
a. have normal vision b. are descendants of one of the 20 original survivors c. receive genetic testing and genetic counseling d. have exceptional hearing e. are descendants of the 20 original survivors
In cities that suffered repeated smallpox outbreaks, the disease killed about _____% of the people it infects
a. 50 b. 33 c. 75 d. 10
The lymphoid organs include all EXCEPT the
a. spleen. b. stomach. c. thymus. d. tonsils and adenoids. e. appendix.
Side A is __________ to side B
a. hypertonic b. hypotonic c. isotonic d. either isotonic or hypertonic e. either isotonic or hypotonic