True or false: Freshwater flatworms and earthworms are similar in that their excretory systems reabsorb electrolytes and eliminate concentrated urine
A. true
B. false
B
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State regulatory agencies that have jurisdiction over medical laboratories fall under which federal entity?
The tracheae of adult terrestrial insects have been a factor in the great abundance of insects because they serve the same function in terms of the delivery of respiratory gases to the cells as do
A. the gills of aquatic insects. B. the lungs of mammals. C. the book lungs of spiders. D. the closed circulatory system of cephalopods. E. the Malpighian tubules of spiders.
Pelvic inflammatory disease may result from infection with ________.
A. Mycobacterium leprae B. Clostridium perfringens C. Staphylococcus epidermidis D. Neisseria gonorrhoeae
Neurotransmitters are released into the _______ while hormones are released into the _______.
a. synaptic cleft; brain b. bloodstream; synaptic cleft c. synaptic cleft; bloodstream d. None of the above