The muscle that raises the corners of the mouth as when smiling is the ________ muscle
A) orbicularis oculi
B) zygomaticus major
C) orbicularis oris
D) masseter
E) buccinator
B
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Which of the following is true of joints that are first-class levers?
A. The fulcrum is in the middle. B. Their mechanical advantage is always less than 1.0. C. Their output force is always greater than the input force. D. Their resistance is between the fulcrum and the distal end of the bone. E. The fulcrum is at the opposite end from the tendinous attachment.
Which of the following statements is/are true?
A. Pennate muscles are capable of producing more tension per unit of cross-sectional area than parallel muscles. B. Parallel muscles are capable of producing more range of motion than pennate muscles. C. Both A and B are true. D. Neither A nor B is true.
Reabsorption of chloride is
a. active b. passive c. dependent on the amount of sodium reabsorbed d. both a and c e. both b and c
Which of the following can indicate a disease may be present?
A. Inflammation B. Malaise C. Abnormal diagnostic test results D. All of the answer choices can indicate the presence of disease.