In what way are intrauterine devices (IUDs) advantageous?
A. They protect women from contracting sexually transmitted infections (STIs).
B. They have no side effects.
C. They last indefinitely.
D. They can be used safely by women while breast-feeding.
Answer: D
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An advantage of the hormonal implant is that it _____
a. has near-perfect effectiveness b. offers protection from STIs c. may reduce the length of a period d. has no possible side effects
The "____" is the most commonly used sexual position in the United States
a. military position c. side by side position b. missionary position d. top on top position
In the context of prenatal sources of sexual orientation, researchers consider which of the following questions?
A. Does the mother's first born child have a tendency toward homosexuality? B. Is the mother's body is able to produce enough male sex hormones to start the process of sexual differentiation in the fetal brain? C. Does the size of the mother's brain match the brain size of most homosexual men? D. Is the mother's body is able to produce enough female sex hormones to prevent virilization of a female fetus? E. Is there a correlation between the birth order of siblings and the possibility of being homosexual that runs in the family?
_____ occurs when the muscles contract.
A. Myotonia B. Vasocongestion C. Aestivation D. Detumescence