AP PSYCHOLOGY

Detailed explanation-1: -The vagina continues to swell from increased blood flow, and the vaginal walls turn a darker color. The woman’s clitoris becomes highly sensitive (may even be painful to touch). The man’s testicles are withdrawn up into the scrotum. Breathing, heart rate and blood pressure continue to increase.

Detailed explanation-2: -In 1966, William Masters and Virginia Johnson proposed a four-stage “linear” model of human sexual response based on some 10, 000 recordings of changes in participants’ physiology. From these data, they identified four successive (hence, linear) stages: (1) excitement, (2) plateau, (3) orgasm, and (4) resolution.

Detailed explanation-3: -(2) Plateau According to Masters and Johnson (1966), a transition to the second phase of the response cycle is characterized by an increase in intensity of physiological arousal (due to continued stimulation) during the excitement phase.

Detailed explanation-4: -Phase 4: Resolution The last phase in the Masters and Johnson’s Sexual Response Cycle is marked with a return to normal (i.e., pre-excitement) conditions. As such, blood pressure and heart rate decrease as the body eases up and genitalia start to revert back to the normal conditions.

Detailed explanation-5: -The sexual response cycle has four phases: excitement, plateau, orgasm, and resolution. Both men and women experience these phases, although the timing usually is different.