Nervous and Endocrine Systems

For more test practice,go to ClassZone.com.1. A scientist investigates the toxic effects of achemical on the brain. Which of the followingexperimental design elements would most likelylead to inconsistent results?A using the same method to measure toxicityB having a sample size that is very largeC keeping the chemical at a constant temperatureD running the tests in different locations2.axonWhat is the main function of the axon, which isillustrated here?A receives signals from neighboring cellsB regulates nutrient intake within the bodyC increases the cell’s surface areaD transmits messages to neighboring cells3. The hypothalamus releases antidiuretichormone, which causes the kidneys to releaseless water from the body. Under whichcondition might the hypothalamus producemore antiduretic hormone?A having high levels of antidiuretic hormoneB having excess water in the bodyC drinking a bottle of juiceD sweating due to exerciseTHINK THROUGH THE QUESTIONThink carefully about each answer choice. Underwhich condition would the body respond byconserving water?4. Anabolic steroids are drugs that mimicspecific hormones in the body. As athletesabuse anabolic steroids in hopes of becomingstronger, their bodies produce less naturalhormone. This effect can be best describedas a(n)A form of negative feedback.B reflex arc.C conditioned response.D osmoregulatory response.5. In what form does a nerve impulse travel fromone neuron to another?A electrical signalB chemical signalC magnetic signalD ionic signal6.stimulidetect??braintransmitsignalsto tospinal cordWhich of the following best completes thisconcept map?A motor neuronsB interneuronsC electric neuronsD sensory neuronsChapter 29: Nervous and Endocrine Systems 907