Which of the following acts as a defensive barrier against toxins and infections?

One of the findings from the most detailed study of sexual behavior among young adults in the United States was that __________________________

a. masturbation continues through the thirties and forties for most men b. women reported more frequent sexual fantasies than their male counterparts c. more than half of young adults from the late twenties to early forties reported more than one sexual partner in the past year d. there were no gender differences in the frequency of orgasm

What is the biological process by which stress can contribute to coronary disease?

What will be an ideal response?