Use your own words to complete the table below with the experiences and changes in anatomy of males and females during the various sexual response phases.
|Stage of Masters and Johnson Sexual Response Cycle||Male Experience and Anatomy||Female Experience and Anatomy|
|Excitement Phase||The penis becomes erect as early as 3 to 8 seconds after stimulation for younger men (Finchner-Rathus, Nevid, Rathus, 2005). The scrotum skin thickens and the testes increase in size. Also the testes and scrotum become elevated. The skin may flush and the nipples may become erect. Men may also show an increase in myotonia, heart rate, and blood pressure.||Vaginal lubrication can take place between 10 and 30 seconds after stimulation. The clitoris swells and the labia majora flattens which spreads them apart. Also the labia minora increases in size. Next the vagina expands and the vaginal walls thicken. The breasts become enlarged and the nipples may become erect. The skin may also flush depending on the arousal state. Women may also show an increase in myotonia, heart rate, and blood pressure.|
|Plateau Phase||During this stage a slight increase in the diameter of the coronal ridge of the penis can be expected and can turn a purplish hue. The testes become even more elevated and increase even more in size. The Cowper’s gland produces secretions which can be seen at the tip of the penis in this stage. Mayotonia may cause spasmodic contractions in the extremities and breathing and heart rate become more rapid.||The tissues in the outer third of the vagina become even more swollen in order to prepare to grasp the penis during ejaculation. The inner two-thirds of the vagina extend fully. The uterus is fully elevated during this stage. Also the clitoris retreats behind the clitoral hood. At this stage the labia minor begins to show color which is referred to as the sex skin. Also the breasts are further engorged and the Bartholin’s gland secretes a fluid that resembles mucus. Mayotonia may cause spasmodic contractions in the extremities and breathing and heart rate become more rapid.|
|Orgasmic Phase||The orgasmic phase includes two different stages in men. In the first, semen, sperm, etc… collect at the base of the penis as the sphincter of the urinary bladder contracts. During the second stage muscles surrounding the urethra and relaxing of the external bladder sphincter cause the penis to expel the seminal fluid. Also blood pressure and heart rate peak during this phase.||The orgasm phase for women entail 3 to 15 contractions of the pelvis muscles as well as the uterus and the anal sphincter contracting rhythmically. Also blood pressure and heart rate peak during this phase.|
|Resolution Phase||This phase constitutes two stages for men. The first happens pretty quickly, within about a minute. The penis loses its erection and the blood flows back into the body. The second stage entails the remaining blood in the tumescence emptying into the body and the testes and scrotum returning to pre-arousal state. Myotonia continues for a few minutes but eventually subsides and regular breathing and heart rate return. Additionally, men enter a refractory stage in which they cannot experience another orgasm or ejaculation. This period can last only minutes or even up to a day for older men. Lastly, during this stage discomfort can be felt if the plateau stage was attained without orgasm, but this discomfort can be relieved through masturbation.||Women also experience a release of blood from areas that were stimulated during coitus. The coloring of the skin goes away. The clitoris moves back into normal position. Myotonia continues for a few minutes but eventually subsides and regular breathing and heart rate return. Lastly, during this stage discomfort can be felt if the plateau stage was attained without orgasm, but this discomfort can be relieved through masturbation.|
Finchner-Rathus, L., Nevid, J.S., Rathus, S.A. (2005). Human sexuality in a world of diversity,sixth edition. Boston, MA: Allyn & Bacon.