The dens process is found on the
A) atlas.
B) axis.
C) sacrum.
D) coccyx.
E) ribs.
B
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Which of the following is NOT true of the differences between the male and female urethrae?
A) The male urethra is part of both the urinary and reproductive systems while the female urethra is only part of the urinary system. B) The male urethra opens at the tip of the penis while the female urethra opens anterior to the vagina opening. C) The male urethra transports both urine and sperm (but never at the same time) while the only function of the female urethra is to transport urine. D) The male urethra has three different regions: prostatic, membranous, and spongy while the female urethra lacks these regions. E) The male urethra is the same length as the female urethra.
Which of the following associations pertaining to the muscles of the larynx is incorrect?
A) posterior cricoarytenoid muscles—widen rima glottidis B) cricothyroid muscles—raise pitch of voice C) thyroarytenoid muscles—lower pitch of voice D) lateral cricoarytenoid—adduct vocal folds E) transverse and oblique arytenoid muscles—relax upon swallowing
Which of the following methods of contraception, when used correctly, is generally the most effective??
A) ?Condoms B) ?Birth control pills C) ?Spermicides D) ?Withdrawal
In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?
A) antigen B) interferon C) antibody D) complement