Why don't you explain how exactly sperm
gets in the pre ejaculate?
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Jude-Love
Active User, Really EHEALTHy
Joined: 17 Jun 2007 Posts: 727 Location: Williamstown, Kentucky USA
Posted: 01-18-08 00:32am
That's what I'd like to know. Sperm don't
just decide to take a trip up the urethra
and get a head start on the others. They
come through when someone
ejaculates....that's pretty much it! The
only reason why a few would be hanging
around still is if they recently
ejaculated.
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blackcat34
Experienced User , Rather EHEALTHy
Joined: 31 Oct 2007 Posts: 448 Location: Brownsville, Texas U.S. of A.
Posted: 01-18-08 01:15am
Source: Textbook of Medical Physiology
10th edition
Author: Guyton & Hall
ISBN: 0-7216-8677-x
Pages: 921-922
Section: Stages of the Male Sexual Act
Quote:
Penile
Erection -Role of the Parasympathetic
Nerves
No need for me to go over this.....
Lubrication a Parasympathetic
Funtion
During sexual stimulation, the
parasympathetic impulses, in addition to
promoting erection, cause the urethral
glands and the bulbourethral glands to
secrete mucus. This mucus flows through
the urethra during intercourse to aid in
the lubrication of coitus. However, most
of the lubrication of coitus is provided
by the female sexual organs rather than by
the male. Without satisfactory
lubrication, the male sexual act is seldom
successful because unlubricated
intercourse causes grating, painful
sensations that inhibit rather than excite
sexual sensations.
Emission
and Ejaculation - Function of the
Sympathetic Nerves
Emission and ejaculation are the
culmination of the male sexual act. When
the sexual stimulus becomes extremely
intense, the reflex centers of the spinal
cord begin to emit sympathetic impulses
that leave the cord at T-12 to L-2 and
pass the genital organs through the
hypogastric and pelvic sympathetic nerve
plexuses to initiate emission, the
forerunner of ejaculation.
Emission begins with the contraction of
the vas deferens and the ampulla to cause
expulsion of sperm into the internal
urethra. Then, contractions of the
muscular coat of the prostate gland
followed finally by contraction of the
seminal vesicles expel prostatic and
seminal fluid also into the urethra,
forcing the sperm forward. All these
fluids mix in the internal urethra with
mucus already secreted by the
bulbourethral glands to form the semen.
This
process to this point is emission
The filling of the internal urethra with
semen elicits sensory signals that are
transmitted through the pudendal nerves to
the sacral regions of the cord, giving the
feeling of sudden fullness in the internal
genital organs. Also, these sensory
signals further excite rhythmical
contraction of the internal genital organs
and cause contraction of the
ischiocavernosus and bulbocavernosus
muscles that compress the bases of the
penile erectile tissue. These effects
together cause rhythmical, wavelike
increases in pressure in both the erectile
tissure of the penis and the genital ducts
and urethra, which "ejaculate" the semen
from the urethra to the the semen from the
urethra to the exterior. This final
process is called ejaculation. At the
same time, rhythmical contractions of the
pelvic muscles and even of some of the
muscles of the body trunk cause thrusting
movements of the pelvis and penis, which
also help propel the semen into the
deepest recesses of the vagina and perhaps
even slightly into the cervix of the
uterus.
So according to this textbook the sperm is
already in the system before it is
ejaculated. The book also states that
another fluid is added at the last
minute... this is what helps propel the
whole mix out of the penis...and also as
the book says "flushes the system".
Edit: phew.. alot of typing....
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young Girl
Especially EHEALTHy
Joined: 21 Jun 2007 Posts: 13932 Location: everythings better in, texas USA
Posted: 01-18-08 09:29am
blackcat34
wrote:
Source: Textbook of Medical
Physiology 10th edition
Author: Guyton & Hall
ISBN: 0-7216-8677-x
Pages: 921-922
Section: Stages of the Male Sexual Act
Quote:
Penile
Erection -Role of the Parasympathetic
Nerves
No need for me to go over this.....
Lubrication a Parasympathetic
Funtion
During sexual stimulation, the
parasympathetic impulses, in addition to
promoting erection, cause the urethral
glands and the bulbourethral glands to
secrete mucus. This mucus flows through
the urethra during intercourse to aid in
the lubrication of coitus. However, most
of the lubrication of coitus is provided
by the female sexual organs rather than by
the male. Without satisfactory
lubrication, the male sexual act is seldom
successful because unlubricated
intercourse causes grating, painful
sensations that inhibit rather than excite
sexual sensations.
Emission
and Ejaculation - Function of the
Sympathetic Nerves
Emission and ejaculation are the
culmination of the male sexual act. When
the sexual stimulus becomes extremely
intense, the reflex centers of the spinal
cord begin to emit sympathetic impulses
that leave the cord at T-12 to L-2 and
pass the genital organs through the
hypogastric and pelvic sympathetic nerve
plexuses to initiate emission, the
forerunner of ejaculation.
Emission begins with the contraction of
the vas deferens and the ampulla to cause
expulsion of sperm into the internal
urethra. Then, contractions of the
muscular coat of the prostate gland
followed finally by contraction of the
seminal vesicles expel prostatic and
seminal fluid also into the urethra,
forcing the sperm forward. All these
fluids mix in the internal urethra with
mucus already secreted by the
bulbourethral glands to form the semen.
This
process to this point is emission
The filling of the internal urethra with
semen elicits sensory signals that are
transmitted through the pudendal nerves to
the sacral regions of the cord, giving the
feeling of sudden fullness in the internal
genital organs. Also, these sensory
signals further excite rhythmical
contraction of the internal genital organs
and cause contraction of the
ischiocavernosus and bulbocavernosus
muscles that compress the bases of the
penile erectile tissue. These effects
together cause rhythmical, wavelike
increases in pressure in both the erectile
tissure of the penis and the genital ducts
and urethra, which "ejaculate" the semen
from the urethra to the the semen from the
urethra to the exterior. This final
process is called ejaculation. At the
same time, rhythmical contractions of the
pelvic muscles and even of some of the
muscles of the body trunk cause thrusting
movements of the pelvis and penis, which
also help propel the semen into the
deepest recesses of the vagina and perhaps
even slightly into the cervix of the
uterus.
So according to this textbook the sperm is
already in the system before it is
ejaculated. The book also states that
another fluid is added at the last
minute... this is what helps propel the
whole mix out of the penis...and also as
the book says "flushes the system".
Edit: phew.. alot of
typing....
|
young Girl
Especially EHEALTHy
Joined: 21 Jun 2007 Posts: 13932 Location: everythings better in, texas USA
Posted: 01-18-08 09:33am
futurshock are you aware that what you
posted came off someone BLOG?
so if i post on myspace that unicorns and
the lochness monster are real then would
you come here and post that too.
i even posted a thread with GIRLS on THIS
SITE that GOT PREGNANT from precum? are
they lieing then maybe?
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Ingi
Moderator
Joined: 09 Mar 2006 Posts: 8783 Location: Grinning like a Cheshire Cat,
Thanks: 161
Thanked:194
Posted: 01-18-08 11:45am
futureshock
wrote:
Ingi
wrote:
Futureshock: PLEASE do
not post partial information.
It misleads these young girls into
thinking that the PULL OUT method is an
actual method of birth control WHICH IT IS
NOT! No doctor or clinic would ever
condone these girls using the PULL OUT
method as their sole method of birth
control!
The part you left
out:
I ALWAYS POST A SOURCE SO PEOPLE CAN READ
THE ENTIRE PAGE FOR THEMSELVES. It is
hard enough to get people to read a small
paragraph, so they can read as much as
they want .
ALSO, the VERY FIRST thing highlighted in
my post said this:
The only explanation of how sperm could
possibly be in a male’s urethra before
orgasm, is that there were traces of semen
lining the urethral walls (from a previous
orgasm) before.
I have also stated, every time I bring
this up, that the withdrawal method has a
high failure rate because guys, especially
younger guys, can not control when they
ejaculate as well as they think, and also
I ALWAYS ADD that there CAN BE SPERM IN
PRE EJACULATE. I explain that sperm from
a prior ejaculation can mix with the pre
ejaculate and impregnate a woman.
I have never, ever suggested withdrawal is
a valid form of birth control, because it
is not. Pre ejaculate can get you
pregnant, and I have never said otherwise.
I am simply explaining how and why pre
ejaculate can cause
pregnancy.
We don't know what was said in your post
now, because it was altered.
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Ande
New User, Becoming EHEALTHy
Joined: 18 Jan 2008 Posts: 13 Location: Miami,
Posted: 01-18-08 11:47am
Black cat is totally correct. I would also
have to say that douching does NOT work
neither will eating certain types of food.
If you don't want to get pregnant go to a
planned parenthood get birth control or
get him to use a condom. Seems like your a
bit to late for a plan B to work. Also you
wont be able to get it so easily if you
are under the age of 18.
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blackcat34
Experienced User , Rather EHEALTHy
Joined: 31 Oct 2007 Posts: 448 Location: Brownsville, Texas U.S. of A.
Posted: 01-18-08 11:47am
ummmmmmm... did someone edit my first
post... I noticed that the part I quoted
was gone...but the part I posted is now
quoted under futureshocks name.... mods?
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Ingi
Moderator
Joined: 09 Mar 2006 Posts: 8783 Location: Grinning like a Cheshire Cat,
Thanks: 161
Thanked:194
Posted: 01-18-08 11:54am
blackcat34
wrote:
ummmmmmm... did someone edit
my first post... I noticed that the part I
quoted was gone...but the part I posted is
now quoted under futureshocks name....
mods?
I think that is because you QUOTED
futureshock and her post WAS ALTERED. So
now it only shows a link for the
information - not the partial information
she posted. From a blog that was someone
else's interpretation of 2 studies
they read.
I'm not sure why her post was altered...
it seems weird that a mod would alter
something a poster wrote. Unless, I
guess... maybe it was requested?
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Martiny
Experienced User , Rather EHEALTHy
Joined: 10 Jan 2008 Posts: 54 Location: Montreal, Quebec,
Posted: 01-18-08 12:03pm
Hmm plan B works good if you take it 72
hours after you have sex.
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blackcat34
Experienced User , Rather EHEALTHy
Joined: 31 Oct 2007 Posts: 448 Location: Brownsville, Texas U.S. of A.
Posted: 01-18-08 12:15pm
Ingi
wrote:
blackcat34
wrote:
ummmmmmm... did someone edit
my first post... I noticed that the part I
quoted was gone...but the part I posted is
now quoted under futureshocks name....
mods?
I think that is because you QUOTED
futureshock and her post WAS ALTERED. So
now it only shows a link for the
information - not the partial information
she posted. From a blog that was someone
else's interpretation of 2 studies
they read.
I'm not sure why her post was altered...
it seems weird that a mod would alter
something a poster wrote. Unless, I
guess... maybe it was
requested?
oh ok... was wondering if a mod can get my
part out of her quotes then... if not..no
worries...
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Ingi
Moderator
Joined: 09 Mar 2006 Posts: 8783 Location: Grinning like a Cheshire Cat,
Thanks: 161
Thanked:194
Posted: 01-18-08 12:27pm
blackcat34
wrote:
Ingi
wrote:
blackcat34
wrote:
ummmmmmm... did someone edit
my first post... I noticed that the part I
quoted was gone...but the part I posted is
now quoted under futureshocks name....
mods?
I think that is because you QUOTED
futureshock and her post WAS ALTERED. So
now it only shows a link for the
information - not the partial information
she posted. From a blog that was someone
else's interpretation of 2 studies
they read.
I'm not sure why her post was altered...
it seems weird that a mod would alter
something a poster wrote. Unless, I
guess... maybe it was
requested?
oh ok... was wondering if a mod can get my
part out of her quotes then... if not..no
worries...
Well, if it is any consolation, I assumed
that quoted text was yours anyway
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blackcat34
Experienced User , Rather EHEALTHy
Joined: 31 Oct 2007 Posts: 448 Location: Brownsville, Texas U.S. of A.
Posted: 01-18-08 12:54pm
Ingi
wrote:
blackcat34
wrote:
Ingi
wrote:
blackcat34
wrote:
ummmmmmm... did someone edit
my first post... I noticed that the part I
quoted was gone...but the part I posted is
now quoted under futureshocks name....
mods?
I think that is because you QUOTED
futureshock and her post WAS ALTERED. So
now it only shows a link for the
information - not the partial information
she posted. From a blog that was someone
else's interpretation of 2 studies
they read.
I'm not sure why her post was altered...
it seems weird that a mod would alter
something a poster wrote. Unless, I
guess... maybe it was
requested?
oh ok... was wondering if a mod can get my
part out of her quotes then... if not..no
worries...
Well, if it is any consolation, I assumed
that quoted text was yours anyway
