The mentalis muscle has what action?
A. Blowing
B. Pouting
C. Sucking
D. Smiling
E. Frowning
Answer: B
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Which of the following may be used to brush an animal's teeth?
a. toothbrush c. gauze b. finger brush d. all of the above
What is a compound called that mimics a neurotransmitter's response?
a. agonist b. antagonist c. synergist d. protagonist e. facsimile
In a normal ECG, no separate wave is detected for atrial repolarization because
a. the amount of atrial tissue is too little for the current to be detected by the ECG electrodes. b. the time period between atrial depolarization and repolarization occurs too rapidly. c. atrial repolarization and ventricular depolarization are simultaneous, and the expected wave is masked by the QRS complex. d. None of these.
Boyle's law explains that _________.
A. at higher temperatures gases are more compressed B. gases under low pressure have a lower volume C. gases are least soluble when they are in liquid D. the pressure of a gas varies inversely with its volume