Sexual Response - enlarged and tend to flatten and spread...

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Sexual Response The response of both sexes to sexual stimulation is quite similar. Sexual excitement in both males and females is characterized by vasocongestion of the genital region, myotonia , and increased heart rate, blood pressure, and respiratory rate. The stages of sexual response begin with arousal or excitement, reach a plateau phase, and end in orgasm. Resolution permits the structures return to their unstimulated state. Female Sexual Response When unstimulated, the uterus is tilted forward over the urinary bladder and the erectile tissues (clitoris and bulb of the vestibule ) are flaccid . During arousal, the uterus changes position, standing up vertically. The inner vaginal canal widens to accommodate insertion of the penis. Increased blood flow to the labia minora causes vasocongestion and redness which may cause the labia minora to extend beyond the labia majora . The labia majora also become reddened and
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Unformatted text preview: enlarged and tend to flatten and spread away from the vaginal orifice . Pressure on the vaginal walls by the bulb of the vestibule increase vaginal lubrication through transudation . The clitoris becomes engorged with blood and becomes erect. During the plateau phase of sexual response, the so-called orgasmic platform is present (due to the constriction of the vaginal canal by the bulb of the vestibule and bulbospongiosus muscle). Orgasm is the rhythmic contraction of the muscular walls of the vagina and uterus. These contractions may aid in keeping semen in the vagina and uterus and help propel sperm towards the egg. Furthermore, the cervix dips into the pool of semen (if present) in the vagina during orgasm. After orgasm, the blood flow, vasocongestion, and erection of the erectile tissues decreases, the vaginal canal returns to its original shape, and the uterus resumes its normal position....
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