Which of the following is true of sperm?
A. Sperm are the largest cells in the human body.
B. Sperm are manufactured in the seminiferous tubules of the testes.
C. The acidity of the vagina nourishes sperm.
D. A typical ejaculate contains 10 to 15 sperm.
Answer: B
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Research suggests that the essential features and format of first dates have _______ over time.
a) changed moderately around the world b) changed only in U.S. samples c) changed dramatically around the world d) remained largely the same in the U.S.
The term fetishism, coined by Richard von Krafft-Ebing describes the sexual attraction that some people have toward:
A. animals. B. same-sex individuals. C. the opposite sex. D. physical objects. E. dead bodies.
________ refers to a chronic viral infection of the liver.
A. Chlamydia B. Hepatitis C. Herpes D. Gonorrhea E. Syphilis
Which of the following is a disadvantage of condoms?
A. They have been known to lessen pleasure during intercourse. B. They increase the risk of contracting sexually transmitted infections (STIs). C. They cannot be used in conjunction with a contraceptive foam. D. They cannot be used in conjunction with birth control pills.