Viagra (Sildenafil citrate), Cialis (Tadalafil) and Levitra (Vardenafil) all work by inhibiting the enzyme ____
a. serine/threonine phosphatase-5 c. protein tyrosine phosphatase-5
b. protein tyrosine kinase-5 d. phosphodiesterase-5
ANS: D
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Which of the following statements about breasts is factual?
a. Women's perceptions of their own breasts are not a determining factor in their overall body image and self-esteem. b. The breasts of both men and women are parts of human sexual anatomy that are prone to cancer. c. Stimulation of a woman's breasts is always a source of intense sexual pleasure. d. Female breasts have no other purpose besides producing milk.
The husband and wife team Masters and Johnson conducted sex research, which focused on ____
a. the prevalence of sexually transmitted infections (STIs) b. cultural patterns of male dominance c. physical arousal d. the connection of sexual responses to emotional states
What diagnostic "marker" is used as a potential indicator of spina bifida in the fetus?
a. alpha fetoprotein c. delta neuroglobin b. beta creatin d. gamma fetal growth factor
Identify the Viennese physician who contributed to our understanding of the psychological aspects of human sexuality and who is also credited as the founder of psychiatry and psychoanalysis.
A. Richard von Krafft-Ebing B. Sigmund Freud C. Anton van Leeuwenhoek D. Oskar Hertwig