In contrast to negative-pressure ventilation, positive-pressure ventilation occurs when:
A) the diaphragm contracts.
B) air is drawn into the lungs.
C) intrathoracic pressure falls.
D) air is forced into the lungs.
Answer: D) air is forced into the lungs.
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Facilitated diffusion
a. involves a carrier molecule. b. requires energy expenditure. c. is how water enters the cells. d. both (a) and (c) above. e. all of these answers.
During the Cori cycle, in the liver
A) lactic acid is produced from glucose B) lactic acid is produced from pyruvic acid C) lactic acid is shuffled to muscle cells D) glucose is produced from lactic acid E) glucose is released from glycogen
Which of the following would NOT be an effective method of producing a vaccine?
A. Use recombinant viral proteins B. Use killed, virulent viruses C. Use live, attenuated viruses D. Use cloned antibodies
What is another name for the autonomic nervous system?
A. Visceral sensory division B. Visceral motor division C. Somatic sensory division D. Central nervous system E. Somatic motor division