During phase I clinical trials, a new drug is tested ________
A) on thousands of human volunteers B) on a few hundred human volunteers
C) in an animal model D) on fewer than 100 human volunteers
Answer: D
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The pulmonary artery carries blood away from the ____
a. aorta b. right atrium c. right ventricle d. left atrium e. left ventricle
During inhalation, the diaphragm moves _____ and the intercostal muscles move the rib cage _____
a. downward; outward b. outward; downward c. outward; outward d. downward; downward e. outward; upward
Homeostasis in living organisms involves processes that:a
provide for unlimited growth. b. allow unrestricted movement. c. allow for adaptation to a harmful environment. d. permit a response to stimuli from either the internal or external environment. e. maintain a constant internal environment.
Dr. Ferguson explained that in a condition known as situs inversus, the internal organs are reversed in their orientation. Thus, the apex of the heart would be oriented to the ________.
A. left B. middle C. back D. right E. front