In former times, surgeons used small doses of curare to relax the patient's abdominal and other muscles during operations. Why did this compound work? What additional precautions do you think the medical staff needs to put into place when a patient is
under anesthesia?
What will be an ideal response?
Curare prevents acetylcholine from connecting to muscles. Since the diaphragm is likely to stop working, patients may stop breathing because of this, so assisted breathing devices are usually used.
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Which of these statements is/are TRUE?
A) In general, prokaryotic organisms can grow at higher temperatures than eukaryotic organisms. B) The most thermophilic prokaryotes are species of Archaea. C) Nonphototrophic organisms are able to grow at higher temperatures than phototrophic organisms. D) All of the statements are true.
A liger is a result from a male lion and a female tiger. Male ligers are usually sterile. This is an example of
A. a prezygotic mechanism. B. hybrid inviability. C. hybrid sterility. D. hybrid breakdown. E. a prezygotic mechanism and hybrid sterility are correct.
How long does the average red blood cell live?
a. 4 days b. 4 weeks c. 4 months d. 1 year e. 4 years
Sexual dimorphism is most often associated with what type of mating system?
A. Promiscuous B. Polygynous C. Monogamous D. Polyandrous