Diagram of the male pelvic and reproductive organs

Ejaculation is the ejection of semen (usually carrying sperm) from the male reproductory tract, and is usually accompanied by orgasm. It is usually the final stage and natural objective of male sexual stimulation, and an essential component of natural conception. In rare cases ejaculation occurs because of prostatic disease. Ejaculation may also occur spontaneously during sleep (a nocturnal emission or "wet dream"). Anejaculation is the condition of being unable to ejaculate. Dysejaculation is ejaculation that is painful or uncomfortable.

Phases[link]

Stimulation[link]

A usual precursor to ejaculation is the sexual arousal of the male, leading to the erection of the penis, though not every arousal nor erection leads to ejaculation. Penile sexual stimulation during vaginal, oral or anal sexual intercourse, or manual stimulation (masturbation) may provide the necessary stimulus for a man to achieve orgasm and ejaculation. Men typically reach orgasm 5–10 minutes after the start of penile-vaginal intercourse, taking into account their desires and those of their partners.^[1][2] Most men could achieve orgasm sooner or delay it until later if they wished to do so.^{[citation needed]} A prolonged stimulation either through foreplay (kissing, petting and direct stimulation of erogenous zones before penetration during intercourse) or stroking (during masturbation) leads to a good amount of arousal and production of pre-ejaculatory fluid. While the presence of sperm in pre-ejaculatory fluid is thought to be rare, sperm from an earlier ejaculation, still present in the urethra, may be picked up by pre-ejaculatory fluid.^{[citation needed]} In addition, infectious agents (including HIV) often can be present in pre-ejaculate.

Premature ejaculation is when ejaculation occurs before the desired time. If a man is unable to ejaculate in a timely manner after prolonged sexual stimulation, in spite of his desire to do so, it is called delayed ejaculation or anorgasmia. An orgasm that is not accompanied by ejaculation is known as a dry orgasm.

Ejaculation[link]

Video of an ejaculation

When a man has achieved a sufficient level of stimulation, ejaculation begins. At that point, under the control of the sympathetic nervous system, semen containing sperm is produced (emission).^[3] The semen is ejected through the urethra with rhythmic contractions.^[4] These rhythmic contractions are part of the male orgasm. They are generated by the bulbospongiosus muscle under the control of a spinal reflex at the level of the spinal nerves S2-4 via the pudendal nerve. The typical male orgasm lasts several seconds.

After the start of orgasm, pulses of semen begin to flow from the urethra, reach a peak discharge and then diminish in flow. The typical orgasm consists of 10 to 15 contractions, although the man is unlikely to be consciously aware of that many. Once the first contraction has taken place, ejaculation will continue to completion as an involuntary process. At this stage, ejaculation cannot be stopped. The rate of contractions gradually slows during the orgasm. Initial contractions occur at an average interval of 0.6 seconds with an increasing increment of 0.1 seconds per contraction. Contractions of most men proceed at regular rhythmic intervals for the duration of the orgasm. Many men also experience additional irregular contractions at the conclusion of the orgasm.^[5]

Ejaculation begins during the first or second contraction of orgasm. For most men the first spurt occurs during the second contraction. The first or second spurt is typically the largest and can contain 40 percent or more of the total ejaculate volume. After this peak the flow of each pulse diminishes. When the flow ends, the muscle contractions of the orgasm continue with no additional semen discharge. A small sample study of seven men showed an average of 7 spurts of semen (range between 5 and 10) followed by an average of 10 more contractions with no semen expelled (range between 5 and 23). This study also found a high correlation between number of spurts of semen and total ejaculate volume, i.e., larger semen volumes resulted from additional pulses of semen rather than larger individual spurts.^[6]

Alfred Kinsey measured the distance of ejaculation, in "some hundred" of men. In three-quarters of men, the semen exuded from the penis, "In other males the semen may be propelled from a matter of some inches to a foot or two, or even as far as five or six (rarely eight) feet".^[7] Masters and Johnson report ejaculation distance to be not greater than 30–60 cm.^[8] Distance of ejaculation however, has nothing to do with sexual functioning, as during penetration of penis in vagina the distance of ejaculation plays no role. Dribbling of semen from the penis is usually sufficient for impregnation.

Refractory period[link]

Most men experience a refractory period immediately following an orgasm, during which time they are unable to achieve another erection, and a longer period again before they are capable of achieving another ejaculation. During this time a male feels a deep and often pleasurable sense of relaxation, usually felt in the groin and thighs. The duration of the refractory period varies considerably, even for a given individual. Age affects the recovery time, with younger men typically recovering faster than older men, though not universally so.^[8]

However, some men are able to achieve sufficient sexual arousal immediately after ejaculation, and others may have refractory periods of fewer than 15 minutes. A short recovery period may allow them to seamlessly continue sexual play from one ejaculation to sexual stimulation in preparation for the next. However, other men are averse to stimulation during the early part of the refractory period.

There are men who are able to achieve multiple orgasms, with or without the typical sequence of ejaculation and refractory period. Some of those men report not noticing refractory periods, or are able to maintain erection by "sustaining sexual activity with a full erection until they passed their refractory time for orgasm when they proceeded to have a second or third orgasm".^[9]

Volume[link]

Ejaculation example

The force and amount of semen that will be ejected during an ejaculation will vary widely between men and may contain between 0.1 and 10 milliliters.^[10] (By way of comparison, note that a teaspoon is 5 ml and a tablespoon holds 15 ml.) Adult semen volume is affected by the time that has passed since the previous ejaculation; larger semen volumes are seen with greater durations of abstinence. It is not clear whether frequent ejaculation increases,^[11] reduces^[12] or has no effect^[13] on the risk of prostate cancer. The duration of the stimulation leading up to the ejaculation can affect the volume.^[14] Abnormally low volume is known as hypospermia. One of the possible underlying causes of low volume or complete lack of semen is ejaculatory duct obstruction. It is normal for the amount of semen to diminish with age.

Quality[link]

The number of sperm in an ejaculation also varies widely, depending on many factors, including the time since the last ejaculation,^[15] age, stress levels,^[16] and testosterone. Greater lengths of sexual stimulation immediately preceding ejaculation can result in higher concentrations of sperm.^[14] An unusually low sperm count, not the same as low semen volume, is known as oligospermia, and the absence of any sperm from the semen is termed azoospermia.

Development[link]

During puberty[link]

The first ejaculation in males often occurs about 12 months after the onset of puberty, generally through masturbation or nocturnal emission (wet dreams). This first semen volume is small. The typical ejaculation over the following three months produces less than 1 ml of semen. The semen produced during early puberty is also typically clear. After ejaculation this early semen remains jellylike and, unlike semen from mature males, fails to liquify. A summary of semen development is shown in Table 1.

Most first ejaculations (90 percent) lack sperm. Of the few early ejaculations that do contain sperm, the majority of sperm (97%) lack motion. The remaining sperm (3%) have abnormal motion.^[17]

As the male proceeds through puberty, the semen develops mature characteristics with increasing quantities of normal sperm. Semen produced 12 to 14 months after the first ejaculation liquifies after a short period of time. Within 24 months of the first ejaculation, the semen volume and the quantity and characteristics of the sperm match that of adult male semen.^[17]

^a Ejaculate is jellylike and fails to liquify.
^b Most samples liquify. Some remain jellylike.
^c Ejaculate liquifies within an hour.

Control from the central nervous system[link]

To map the neuronal activation of the brain during the ejaculatory response, researchers have studied the expression of c-fos, a proto-oncogene expressed in neurons in response to stimulation by hormones and neurotransmitters.^[18] Expression of c-fos in the following areas has been observed:^[19][20]

• medial preoptic area (MPOA)
• lateral septum, bed nucleus of the stria terminalis
• paraventricular nucleus of the hypothalamus (PVN)
• ventromedial hypothalamus, medial amygdala
• ventral premammillary nuclei
• ventral tegmentum
• central tegmental field
• mesencephalic central gray
• peripeduncular nuclei
• parvocellular subparafascicular nucleus (SPF) within the posterior thalamus

Hands-free ejaculation[link]

Although uncommon, some men can get hands-free ejaculations, which is an ejaculation without any manual stimulation. Such men usually do it by tensing and flexing their abdominal and buttocks muscles along with vigorous fantasising. Some men do it by relaxing the area around the penis, which may result in harder erections especially when hyperaroused.^[21]

Health issues[link]

For most men, no detrimental health effects have been determined from ejaculation itself or from frequent ejaculations, though sexual activity in general can have health or psychological consequences. A very small percentage of men may experience a transient postorgasmic illness syndrome following ejaculation.^[22][23]

See also[link]

Sexuality portal

Wikimedia Commons has media related to: Ejaculation

• Aspermia
• Azoospermia
• Coitus interruptus
• Coitus reservatus
• Cum shot
• Fertilization
• Retrograde ejaculation
• Spermatorrhea

References[link]

Further reading[link]

• "Swimming Toward Conception: The Semen Analysis". Focus on Fertility, American Infertility Association and Organon Pharmaceuticals USA Inc. Archived from the original on 2008-01-12. http://web.archive.org/web/20080112144449/http://www.focusonfertility.org/resource_swimming_conception.htm. 

La Fouine
Background information
Birth name	Laouni Mouhid
Born	(1981-12-25) 25 December 1981 (age 30) Trappes, Yvelines, France
Genres	Hip-Hop Gangsta rap R&B
Occupations	Rkkr/Singer
Years active	1996–present
Labels	Sony Music France Banlieue Sale Music
Associated acts	Amel Bent
Website	Official site

Laouni Mouhid, commonly known by his alias La Fouine (English: The Weasel) or Fouiskin (born December 25, 1981 in Trappes, Yvelines), is a French rapper of Moroccan origins from the city of Trappes, Yvelines in the Paris western suburbs. He is an established figure in French rap. La Fouine signed with Sony Records in 2003 and released his debut album, Bourré au son, in 2005. La Fouine released his second album, Aller-Retour, on March 12, 2007. The American beatmaker Focus produced four songs on the album. His most recent album, Mes Repères, was released on February 23, 2009 and is two times gold record in France. His new album, a double CD intitled "La Fouine Vs Laouni," released on February 14 for Valentine's Day, was inspired by the two sides of himself, through his career and experience of his daily life. The first one, La Fouine, a character he created to "entertain people, La Fouine is very cunning, materialistic, bad boy and so vulgar ... it's not really me" said the artist. The second one Laouni (his real name) talks about things he lived in his youth, so his rap is sincere and moving. The week of album's release, more than 25 621 copies were sold in France, a feat for a hip hop artist. He has also his own label "Banlieue Sale Music" and his own clothing line called "Street Swagg".

Discography[link]

• 2004: Planète Trappes Vol.2

(mixtape)

• 2005: Bourré au son
• 2006: Planète Trappes Vol.2 (mixtape)
• 2007: Aller-Retour
• 2008: Capitale Du Crime (mixtape)
• 2009: Mes Repères
• 2010: Capitale Du Crime Vol.2 (mixtape)
• 2011: La Fouine vs. Laouni
• 2011: Capitale Du Crime Vol.3 (mixtape)

Appearances[link]

La Fouine in Besançon in 2011

2000

• La Fouine : Ma génération in Rap.com compilation

2001

• La Fouine Feat MC Circulaire : Façon Fouiskin 2002 *La Fouine : Freestyle in Violences Urbaines mixtape
• La Fouine Feat Alibi Montana - C'est Pour Les Mecs D'en Bas in Mandat de dépot compilation

2003

• La Fouine : Staarflah la famille in Talents Fachés compilation
• La Fouine : Mon autobiographie in Mala, Ma zone mixtape

2005

• La Fouine : C'est pour les mecs d'en bas in West Rider 2 compilation
• La Fouine Feat Willy Denzei : My life
• La Fouine Feat Pat Seb - Let's shake the towels

2006

• La Fouine : Il en faut in Talents Fachés 3 compilation
• La Fouine Feat Jazz Malone : Non-Stop in Panam All Stars compilation
• La Fouine : Les barreaux in Phonographe compilation
• La Fouine Feat Chabodo : Levez haut les drapeaux
• La Fouine Feat. 2g68 : Koma Etilik 2007
• Manu Key Feat La Fouine : Responsable in Manu Key's album, Prolifique Vol.2
• Al Peco feat La Fouine - Apparitions
• Phil G Unit Feat La Fouine : Talents Gachés
• La Toxine Feat La Fouine : J'ai de l'amour pour mes cailles *Matchstick Feat La Fouine : Dignity in Shock Therapy album
• La Fouine Feat S.Kro & Mc Gam'1 - Luxembourg City

2008

• La Fouine : J'repense aux frères in Big Ballers vol.2 compilation *Grodash Feat La Fouine - Tenter sa chance sur le Street CD de Grodash, La vie de rêve
• La Fouine : Respect aux mothers Fouiskin Feat. Phil G
• La Fouine : Très agile, elle niche dans les greniers ou les dépendances Feat Willy Denzei

2009 *La Fouine : "Tous les mêmes" et "Du ferme" in "Mes repères"

• La Fouine : Played the role of "Ali K" in the movie District B13 Ultimatum

2010

• La Fouine "Krav Maga" et "Banlieue Sale" dans "Capitale Du Crime 2"

2010

• La Fouine Ft. The Game - "Caillera For Life"

Videography[link]

• 2004 : "Banlieue Ouest" feat. VF Gang
• 2005 : "Mon autobiographie"
• 2005 : "l'unité" feat. Jmi-sissoko
• 2005 : "Quelque chose de special" feat. Eilijah
• 2006 : "Etat des lieux"
• 2007 : "Reste en chien" feat. Booba
• 2007 : "Qui peut me stopper"
• 2007 : "Banlieue Sale" feat. Gued'1 et Kennedy
• 2007 : "On s'en bat les c******s"
• 2007 : "Responsable" feat. Manu Key
• 2008 : "Tombé pour elle" feat. Amel Bent
• 2008 : "Cherche la monnaie"
• 2008 : "Dignity" avec Matchstick
• 2008 : "Ca fait mal Remix" feat. Soprano & Sefyu
• 2008 : "Tous les memes"
• 2009 : "Du ferme"
• 2009 : "Moi hamdulah cava" feat. Canardo* 2009 : "Krav maga"
• 2009 : "Banlieue Sale Music" feat. Nessbeal* 2009 : "Krav maga Remix" feat. Canardo, Gued'1, Green, MLC
• 2010 : "Nés pour Briller" feat. Canardo, Green, MLC
• 2010 : "Mauvais Oeil" feat. Green
• 2010 : "Viser la victoire" feat. Admiral T & Médine
• 2010 : "Passe leur le salam" feat. Rohff
• 2010 : "Caillra for life" feat. Game
• 2011 : "Veni, Vidi, Vici"
• 2011 : "Nhar Sheitan Click"
• 2011 : "Papa"
• 2011 : "D'où L'on Vient"
• 2011 : "Toute la night"
• 2011 : "VNTM.com" feat. DJ Khaled
• 2011 : "Vécu" feat. Kamelancien
• 2011 : "J'arrive en balle" feat. Fababy
• 2011 : "Ben Laden"
• 2011 : "C'est bien de..." feat. Fababy
• 2011 : "C'est ça le thème"
• 2011 : "Rollin' Like A Boss" La Fouine featuring T-Pain & Mackenson

External links[link]

• La Fouine's official website
• La Fouine sur Inc'Rock Festival vidéo