What is the name of the first cervical vertebra? Why?
A. axis, Roman mythology
B. atlas, it allows "yes" motion of the head
C. axis, it allows the "no" motion of the head
D. sphinoid, Egyptian sphinx mythology
E. atlas, Greek mythology
Answer: E
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The tuberculin skin test, or the purified protein derivative (PPD) test, is based on:
a. delayed hypersensitivity cell-mediated immunity to certain antigenic components of the organism. b. injection of M. tuberculosis under the skin and subsequent mild cutaneous infection. c. antigen-antibody reactions occurring at the injection site. d. humoral-mediated immune response.
Most seeds are dormant until
a. conditions are favorable. b. drastic conditions are present. c. the timing is right. d. conditions are favorable and the timing is right
Deviations from __________ indicate that a
population is evolving. Fill in the blank(s) with the appropriate word(s).
Which of the following bones is NOT a part of the human skull?
a. iliac b. frontal c. ethmoid d. occipital e. temporal