A relationship between friends who are physically intimate with each other, but without the responsibility of a commitment, is termed “____.”

A characteristic of passionate love is ____.

Couples with ____ problems are twice as susceptible to divorce.

Active prostitutes are ____ times more likely to be murdered than women of a similar age and race.

What must be present for an adequate erection to maintain during sexual relations? 

A person’s personal sense of being male or female is referred to as “____.”

Camilla, a college student, meets a man at a bar to whom she is instantly attracted. After going back to her apartment, the two get caught up in the moment, and have sex without using contraception. The next morning Camilla is concerned that she may become pregnant and wants to use the emergency contraceptive pill Plan B. How can Camilla obtain Plan B?

During orgasm, both men and women increase secretion of several hormones including ____.

Aphrodisiacs are ____ that are thought to arouse or increase sexual response.

“Identical twins” are also known as “____.”