Semen

seminal fluidseminalspermseedcumSemen ingestioncooling fluiddrinking semenejaculateejaculatory fluids
Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa.wikipedia
672 Related Articles

Spermatozoon

spermatozoaspermsperm cells
Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa.
Semen has an alkaline nature and the spermatozoa do not reach full motility (hypermotility) until they reach the vagina, where the alkaline pH is neutralized by acidic vaginal fluids.

Urethra

male urethraurethralfemale urethra
The bulbourethral glands secrete a clear secretion into the lumen of the urethra to lubricate it.
In males, the urethra travels through the penis and also carries semen.

Prostate

prostate glandprostaticventral prostate
During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen.
The function of the prostate is to secrete a slightly alkaline fluid, milky or white in appearance, that in humans usually constitutes roughly 30% of the volume of semen along with spermatozoa and seminal vesicle fluid.

Sexual intercourse

sexcopulationintercourse
Internal fertilization takes place after insemination of a female by a male through copulation.
Male orgasm usually includes ejaculation, a series of muscular contractions that deliver semen containing male gametes known as sperm cells or spermatozoa from the penis into the vagina.

Seminal vesicle

seminal vesiclesvesicula seminalisvesicular gland
During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. Semen is produced and originates from the seminal vesicle, which is located in the pelvis.
They secrete fluid that partly composes the semen.

Putrescine

tetramethylenediamine
Basic amines such as putrescine, spermine, spermidine and cadaverine are responsible for the smell and flavor of semen.
They are also found in semen and some microalgae, together with related molecules like spermine and spermidine.

Ejaculatory duct

ejaculatory ducts
During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen.
During ejaculation, semen passes through the prostate gland, enters the urethra and exits the body via the urinary meatus.

Sperm

sperm cellspermatiasperm cells
The normal environment of the vagina is a hostile one (c.f. sexual conflict) for sperm cells, as it is very acidic (from the native microflora producing lactic acid), viscous, and patrolled by immune cells. These alkaline bases counteract and buffer the acidic environment of the vaginal canal, and protect DNA inside the sperm from acidic denaturation.
Sperm cells are carried out of the male body in a fluid known as semen.

Spermine

Basic amines such as putrescine, spermine, spermidine and cadaverine are responsible for the smell and flavor of semen.
Crystals of spermine phosphate were first described in 1678, in human semen, by Antonie van Leeuwenhoek.

Prostaglandin

prostaglandinsprostoglandinprostaglandins a
The name prostaglandin derives from the prostate gland, chosen when prostaglandin was first isolated from seminal fluid in 1935 by the Swedish physiologist Ulf von Euler, and independently by M.W. Goldblatt.

Ejaculation

ejaculateejaculatedejaculates
During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. The process that results in the discharge of semen is called ejaculation.
Ejaculation is the discharge of semen (normally containing sperm) from the male reproductory tract, usually accompanied by orgasm.

Pre-ejaculate

pre-ejaculatory fluidCowpercowper's fluid
It is similar in composition to semen but has distinct chemical differences.

Semen cryopreservation

frozen semencryopreservationsperm banking
Semen cryopreservation can be used for far longer storage durations.
Semen can be used successfully indefinitely after cryopreservation.

HIV

human immunodeficiency virusHIV positiveHIV-positive
Semen can transmit many sexually transmitted diseases and pathogens, including viruses like HIV and Ebola.
In most cases, HIV is a sexually transmitted infection and occurs by contact with or transfer of blood, pre-ejaculate, semen, and vaginal fluids.

Prostate-specific antigen

prostate specific antigenPSAprostate-specific antigen (PSA)
After a period typically ranging from 15 – 30 minutes, prostate-specific antigen present in the semen causes the decoagulation of the seminal coagulum.
PSA is produced for the ejaculate, where it liquefies semen in the seminal coagulum and allows sperm to swim freely.

Ebola virus disease

EbolaEbola virusEbola Hemorrhagic Fever
Semen can transmit many sexually transmitted diseases and pathogens, including viruses like HIV and Ebola.
Semen or breast milk of a person after recovery from EVD may carry the virus for several weeks to months.

Semen analysis

sperm countsemen sampleLeuco'''spermia
It usually clears up without treatment, or with antibiotics, but if persistent further semen analysis and other urogenital system tests might be needed to find out the cause.
A semen analysis (plural: semen analyses), also called "seminogram" evaluates certain characteristics of a male's semen and the sperm contained therein.

Condom

condomscollection condomrubber
A semen allergy can be distinguished from a latex allergy by determining if the symptoms disappear with use of a condom.
The male condom is rolled onto an erect penis before intercourse and works by blocking semen from entering the body of a sexual partner.

Fellatio

blowjobfellatingblow job
Swallowing semen carries no additional risk other than those inherent in fellatio.
Fellatio can be sexually arousing for participants, and males commonly experience orgasm and ejaculation of semen during the act.

Cadaverine

N4 cadaverinepentamethylene diaminepentamethylenediamine
Basic amines such as putrescine, spermine, spermidine and cadaverine are responsible for the smell and flavor of semen.
It is partially responsible for the distinctive odors of urine and semen.

Capacitation

capacitatedsperm capacitationcapacitated spermatozoa
Once the semen enters the ductus epididymis the principal cells, which contain pinocytotic vessels indicating fluid reabsorption, secrete glycerophosphocholine which most likely inhibits premature capacitation.
The vaginal secretions dilute it, and make it less active due to the pH of the vagina, which differs from that of semen.

DNA

deoxyribonucleic aciddouble-stranded DNAdsDNA
These alkaline bases counteract and buffer the acidic environment of the vaginal canal, and protect DNA inside the sperm from acidic denaturation.
Forensic scientists can use DNA in blood, semen, skin, saliva or hair found at a crime scene to identify a matching DNA of an individual, such as a perpetrator.

Zinc

ZnZn 2+ zinc alloy
Semen is particularly rich in zinc, a key factor in prostate gland function and reproductive organ growth.

Enki

EaEnki/Ea d Ea
The ancient Sumerians believed that semen was "a divine substance, endowed on humanity by Enki", the god of water.
Enki thus takes on all of the functions of the Abzu, including his fertilising powers as lord of the waters and lord of semen.

Female hysteria

hysteriahysterical(female) hysteria
Retention was believed to cause female hysteria.
Another cause was thought to be the retention of a supposed female semen, thought to have mingled with male semen during intercourse.