Muscles of the head ________
A) play an important role in breathing
B) facilitate movement of the facial features and promote mastication
C) allow voluntary eye movements
D) extend, laterally flex, and rotate the head
B
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Of the following substances, which has the greatest potential to cause dependence if used regularly?
A. Alcohol B. Heroin C. Marijuana D. Cocaine E. Nicotine
The first group of vertebrates to successfully colonize land was the __________________
Fill in the blank with the correct word.
In which part of the small intestine does most of the chemical digestion occur?
a. ileum b. jejunum c. duodenum d. both A and C above
The gravitational field of the moon is 17% of Earth's. How would the weight and mass of a 100-pound astronaut change on the moon?
A) On the moon, the astronaut would have more mass than on Earth but would weigh the same. B) On the moon, the astronaut would have less mass than on Earth but would weigh the same. C) On the moon, the astronaut would have the same mass as on Earth but would weigh 17 pounds (100 × 0.17). D) On the moon, the astronaut would have the same mass as on Earth but would weigh 588 pounds (100/0.17). E) On the moon, the astronaut would have less mass than on Earth and would weigh 17 pounds (100 × 0.17).