Semen

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

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 fluid which contributes to the volume of the semen.

Sexual intercourse

sexcopulationintercourse
Internal fertilization takes place after insemination of a female by a male through copulation.
Natural human reproduction involves penile–vaginal penetration, during which semen, containing male gametes known as sperm cells or spermatozoa, is expelled via ejaculation through the penis into the vagina.

Urethra

male urethraurethralFemale urethra
The bulbourethral glands secrete a clear secretion into the lumen of the urethra to lubricate it.
The urethra provides an exit for urine as well as semen during ejaculation.

Spermidine

Basic amines such as putrescine, spermine, spermidine and cadaverine are responsible for the smell and flavor of semen.
It was originally isolated from semen.

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.

Insemination

inseminateinseminateddonor insemination
Internal fertilization takes place after insemination of a female by a male through copulation.
During ejaculation, semen, containing male gametes known as sperm, is expelled through the penis and passes through the vaginal vault, cervix and into the uterus, and then into the fallopian tubes.

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 fluidCowper's FluidCowper
It is similar in composition to semen but has distinct chemical differences.

Semen cryopreservation

frozen semencryogenically preservedcryopreservation
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 antigenPSAKLK3
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 sampleComputer assisted semen analysis
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 forming a physical barrier which blocks 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 both participants, and males who receive fellatio 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.

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

EaNudimmudEnki/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.