Psychology 2075 Chapter Notes - Chapter 9: Vaginal Lubrication, Bulb Of Vestibule, Female Ejaculation

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Published on 19 Apr 2013
School
Western University
Department
Psychology
Course
Psychology 2075
Professor
Chapter 9
Sexual Response
The Sexual Response Cycle
Sexual response typically progresses in three stages, excitement, orgasm, and
resolution
Vasocongestion: an accumulation of blood in the blood vessels of a region of
the body, especially the genitals, a swelling or erection results
Myotonia: muscle contraction
Excitement
Excitement: the first stage of sexual response, during which erection in the
male and vaginal lubrication in the female occur
Erection happens when the corpus cavernosa and the corpus sponginosum
fill with blood
A man may have an erection only seconds after stimulation
o Can be slower due to age, alcohol and fatigue
o Before orgasm the penis may secrete seminal fluid which is not
ejaculate, but may have few active sperm (secreted form the Cowper’s
gland)
Erection occurs when the main arteries that supply the penis with blood fill,
and the veins constrict restricting outgoing blood flow
Erections do not last forever, so the opposite process happens when the
erection disappears, also the transmitters norepinephrine and epinephrine
are involved
An important response for women is lubrication
This is also caused by vasocongestion, there is increased blood flow to the
walls of the vagina, and the lubrication is from the semipermeable
membranes f the vagina
As the women becomes more aroused the orgasmic platform forms:
o A tightening of the entrance of the vagina caused by contractions of
the bulbospongiosus muscle (which covers the vestibular bulbs) that
occur late in the arousal stage of sexual response
During the excitement phase the glans of the clitoris (the tip) swells
o Its similar to the erection in a male
The vestibular bulbs also swell during excitement
Late in the excitement phase the clitoris may rise (it essentially retracts or
draws up into the body)
Similar in men, blood fills the region due to the relaxation of the smooth
muscle
Nitric Oxide is a key neurotransmitter involved in the process
In an un aroused state the inner lips are generally folded over covering the
entrance to the vagina and the outer lips lie close to each other
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During excitement the inner lips swell and open up
Also during excitement the nipples swell due to the contraction of the muscle
fibers
The breasts also swell due to vasocongestion
When a woman is in an un-aroused state, the vagina walls lie against each
other like a deflated balloon. When the women goes into an aroused state the
vagina inflates like an inflated balloon
In both men and women there are different sexual responses like the sex
flush, or thickening of the scrotal wall
Orgasm
Orgasm: the second stage of sexual response; an intense sensation tat occurs
at the peak of sexual arousal and is followed by release of sexual tensions
In men orgasms are a series of contractions of the pelvic organs at 0.8 second
intervals
In the preliminary stage, the vas, seminal vesicles and prostate contract
forcing the ejaculate into a bulb at the end of the urethra (‘cumming’-
sensation before ejaculation and it can not be stopped
In the second stage the urethral bulb, muscles at the base of the penis, and
the urethra contract rhythmically forcing the semen through the urethra and
out the opening at the tip of the penis
There may be a difference in ejaculation and the sensation of an orgasm-
studies have shown that the sensation of orgasm can also be affected by
psychological and social factors
After studying the results of questionnaires asking men and women what an
orgasm feels like, they suggest that the sensation are quite similar for men
and women
It I s hard to tell whether or not women actually have an orgasm, there is not
tell tale sign (like ejaculate), the best thing is to have good honest
communication in a relationship
If a women fakes an orgasm, then the man might feel like what he is doing is
right and can cause some problems within a relationship
Resolution
Resolution: the third stage of the sexual response, in which the body returns
to the un-aroused state
In the women the clitoris returns to its normal position, and it takes longer to
reduce in size
About 10-15 seconds after the breasts reduce in size
The orgasmic platform relaxes and begins to shrink
The resolution phase takes about 15-30 minutes, and may take longer if the
woman doesn’t have an orgasm
In a man resolution is more obvious as the blood flows out of the penis and
he loses his erection
After the resolution phase the men enter a refractory period:
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o The period following orgasm where the man cannot be sexually
aroused
The refractory period varies from man to man and tends to be longer as the
man gets older
Oxytocin is secreted during sexual arousal, and a surges of prolactin occurs at
orgasm in both women in men
Women can have multiple orgasms, where a women has multiple orgasms in
a short amount of time
o This is because women take a longer for vasocongestion to occur and
there fore is she is aroused she can immediately have another orgasm
More On Women’s Orgasms
Clitoral Orgasms:
o Freud’s term for orgasm in the female resulting from stimulation of
the clitoris
Vaginal Orgasm:
o Freud’s term for orgasm in the female resulting from stimulation of
the vagina in heterosexual intercourse; Freud considered vaginal
orgasm to be more mature than clitoral orgasm
Freud believe that as women mature there erogenous zone shift from the
clitoris to the vagina
A clitoral orgasm is seen as an immature orgasm, and a vaginal as seen as a
mature
Women, who could not achieve orgasm through vaginal stimulation, were
called vaginally frigid.
Masters and Johnson said that both of the orgasms are the same because
there is n physiological difference and the fact that eve vaginal stimulation
result is a large amount of clitoral stimulation
Some men are capable of having multiple orgasms- some said that this did
not happen every time and other said that it developed later in life. Men also
reported that some of there orgasms did not follow with ejaculation
Other Models
Some are critics of masters and Johnson work because they relied to much of
the physiological aspects and did not include what the people were feeling
and thinking
Another criticisms includes how research participants were selected and
how this may have been a self fulfilling prophecy for the outcome
o All of there research Participants had to have a high sexual desire and
have both had an orgasm from intercourse and masturbation
Kaplans triphasic Model
There are three components: sexual desire, vasocongestion and muscular
contractions
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Document Summary

Sexual response typically progresses in three stages, excitement, orgasm, and resolution. Vasocongestion: an accumulation of blood in the blood vessels of a region of the body, especially the genitals, a swelling or erection results. Excitement: the first stage of sexual response, during which erection in the male and vaginal lubrication in the female occur. Erection happens when the corpus cavernosa and the corpus sponginosum fill with blood. Erection occurs when the main arteries that supply the penis with blood fill, and the veins constrict restricting outgoing blood flow. Erections do not last forever, so the opposite process happens when the erection disappears, also the transmitters norepinephrine and epinephrine are involved. An important response for women is lubrication. This is also caused by vasocongestion, there is increased blood flow to the walls of the vagina, and the lubrication is from the semipermeable membranes f the vagina.

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