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In an open circulatory system a capillaries provide a

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19.In an open circulatory systema.Capillaries provide a large surface area for exchange of nutrients with the tissueb.No oxygen-carrying molecule is requiredc.The heart must create high pressure to drive blood throughout the bodyd.The tissues are bathed in oxygen directlye.Arterioles determine blood flow distribution
20.In a cross section through an artery and vein running parallel in your leg, which vesselwould be the artery?
21.If a molecule of CO2 released into the blood in your left toe is exhaled from your nose, itmust pass through all of the following except:
22.You get your blood pressure measured, and you are told that it is 130/85.The 130 is:
23.Which of the following statements about the electrical stimulation of heart is true?a.Pacemaker cells located in the SA node in the right atrium initiate actionpotentials in response to stimulation by motor neuronsb.The signal is delayed at the AV node to allow the ventricles to fillc.Electrical circuitry ensures that the right atrium contracts before the left atriumd.Signals propagate almost instantaneously from the atria to the ventricles becauseatrial muscle cells spread the action potential to ventricular muscles cellse.Serving the sympathetic and parasympathetic nerve input to the heart stops theheart from beating
24.Komodo dragons (Varanus komodoensis) are an endangered species. One of the waysthat conservationists are working to maintain their numbers is through captive breedingprograms in zoos. Typically females are housed alone, and males are transported betweenzoos to mate with females and produce offspring. In some cases, females produceoffspring even though they are not in contact with a male. Which term below bestdescribes the production of offspring by female Komodo dragons housed alone in zoos?
BIOS 1710PRACTICEExam 2BRODIEa.sexual reproductionb.fissionc.buddingd.parthenogenesis
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