Final answer:
In Kinsey's model of the sexual response cycle, the excitement phase is the phase in which the intrinsic (inner) motivation to pursue s`ex arises
Step-by-step explanation:
In Kinsey's model of the sexual response cycle, the phase in which the intrinsic (inner) motivation to pursue sex arises is known as the excitement phase. This phase marks the beginning of the sexual response cycle and is characterized by se`xual arousal, which can be initiated by psychological and physical stimuli.
During this phase, vasod ilation leads to vaso congestion in erectile tissues of both men and women, resulting in an erection of the pe`nis or c li`toris and lubrication and expansion of the vaginal ca`nal. This ar`ousal phase sets the stage for further sexual activity, progressing through the plateau, orga`sm, and eventually leading to the resolution phase, where the body returns to its unar`oused state.