Masters and JohnsonStageMaleFemaleBothExcitement-“The testes move closer to the body, and the scrotal skin thickens and tightens during the excitement phase” (Greenberg, Bruess, Oswalt,2013, Pg.161).-Increased size of Labia Minora, Vagina, and Nipples. -“In women, vaginal lubrication occurs, and the labia minora spreadand separate so as to make the vestibule more accessible” (Greenberg, Bruess, Oswalt, 2013, Pg. 161).-Deepened color due to increased blood. -“Sex Flush” engorgement of bloodin breasts and chest.-Increased blood flow causes a seepage of moisture.-The heart rate increases as well as blood pressure and muscle tension.-“Blood engorges the abdominal area, resulting in an increase in penile and clitoral erection” (Greenberg, Bruess, Oswalt, 2013, Pg.161).Plateau-“Cowper’s gland secretions may result from muscular contractions. The penis becomes fully erect, and the testes move closer to the body cavity” (Greenberg, Bruess, Oswalt, 2013, Pg.161).