63 relations: Alfred Kinsey, Anal sex, Anejaculation, Anorgasmia, Aspermia, Azoospermia, BJU International, Bulbospongiosus muscle, Canine reproduction, Coitus interruptus, Coitus reservatus, Cum shot, Delayed ejaculation, Ejaculatory duct obstruction, Erection, Fertilisation, Hypospermia, Indo-Pacific bottlenose dolphin, Insemination, JAMA (journal), Levator ani, Liquefaction, Litre, Male reproductive system, Masters and Johnson, Masturbation, Mikura-jima, National Institutes of Health, New Scientist, Nocturnal emission, Non-penetrative sex, Oligospermia, Oral sex, Orgasm, Pelvic thrust, Penis, Perineum, Postorgasmic illness syndrome, Pre-ejaculate, Premature ejaculation, Prostate, Puberty, Pudendal nerve, Refractory period (sex), Retrograde ejaculation, Semen, Sexual arousal, Sexual penetration, Sexual stimulation, Short-beaked echidna, ..., Sleep, Sperm, Spermatorrhea, Spinal nerve, Stallion, Stretch reflex, Sympathetic nervous system, Teaspoon, Testicle, Testosterone, Urethra, Vagina, Wild boar. Expand index (13 more) » « Shrink index
Alfred Charles Kinsey (June 23, 1894 – August 25, 1956) was an American biologist, professor of entomology and zoology, and sexologist who in 1947 founded the Institute for Sex Research at Indiana University, previously known as the Kinsey Institute for Research in Sex, Gender, and Reproduction.
Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person's anus, or anus and rectum, for sexual pleasure.
Anejaculation is the pathological inability to ejaculate in males, with (orgasmic) or without (anorgasmic) orgasm.
Anorgasmia, or Coughlan's syndrome, is a type of sexual dysfunction in which a person cannot achieve orgasm despite adequate stimulation.
Aspermia is the complete lack of semen with ejaculation (not to be confused with azoospermia, the lack of sperm cells in the semen).
Azoospermia is the medical condition of a man whose semen contains no sperm.
BJU International (or BJUI, formerly known as the British Journal of Urology) is a monthly peer-reviewed medical journal that was established in 1929.
The bulbospongiosus muscle (bulbocavernosus in older texts) is one of the superficial muscles of the perineum.
Canine reproduction is the process of sexual reproduction in domestic dogs.
Coitus interruptus, also known as the rejected sexual intercourse, withdrawal or pull-out method, is a method of birth control in which a man, during sexual intercourse, withdraws his penis from a woman's vagina prior to orgasm (and ejaculation) and then directs his ejaculate (semen) away from the vagina in an effort to avoid insemination.
Coitus reservatus (coitus, "sexual intercourse, union" + reservatus, "reserved, saved"), also known as sexual continence, is a form of sexual intercourse in which the penetrative partner does not attempt to ejaculate within the receptive partner, but instead attempts to remain at the plateau phase of intercourse for as long as possible avoiding the seminal emission.
A cum shot is the depiction of human ejaculation, especially onto another person.
Delayed ejaculation, also called retarded ejaculation or inhibited ejaculation, is a man's inability for or persistent difficulty in achieving orgasm, despite typical sexual desire and sexual stimulation.
Ejaculatory duct obstruction (EDO) is a pathological condition which is characterized by the obstruction of one or both ejaculatory ducts.
An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged.
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, conception, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism.
Hypospermia is a condition in which a man has an unusually low ejaculate (or semen) volume, less than 1.5 ml.
The Indo-Pacific bottlenose dolphin (Tursiops aduncus) is a species of bottlenose dolphin.
Insemination is the deliberate introduction of sperm into a female animal or plant for the purpose of impregnating or fertilizing the female for sexual reproduction.
JAMA: The Journal of the American Medical Association is a peer-reviewed medical journal published 48 times a year by the American Medical Association.
The levator ani is a broad, thin muscle, situated on either side of the pelvis.
In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid phase which behaves in accordance with fluid dynamics.
The litre (SI spelling) or liter (American spelling) (symbols L or l, sometimes abbreviated ltr) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm3), 1,000 cubic centimetres (cm3) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10 cm×10 cm×10 cm (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word litre is derived from an older French unit, the litron, whose name came from Greek — where it was a unit of weight, not volume — via Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI,, p. 124. ("Days" and "hours" are examples of other non-SI units that SI accepts.) although not an SI unit — the SI unit of volume is the cubic metre (m3). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English-speaking countries. The spelling "liter" is predominantly used in American English. One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as the mass of one cubic decimetre of water at the temperature of melting ice. Subsequent redefinitions of the metre and kilogram mean that this relationship is no longer exact.
The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction.
The Masters and Johnson research team, composed of William H. Masters and Virginia E. Johnson, pioneered research into the nature of human sexual response and the diagnosis and treatment of sexual disorders and dysfunctions from 1957 until the 1990s.
Masturbation is the sexual stimulation of one's own genitals for sexual arousal or other sexual pleasure, usually to the point of orgasm.
is a volcanic Japanese island in the Pacific Ocean.
The National Institutes of Health (NIH) is the primary agency of the United States government responsible for biomedical and public health research, founded in the late 1870s.
New Scientist, first published on 22 November 1956, is a weekly, English-language magazine that covers all aspects of science and technology.
A nocturnal emission, informally known as a wet dream or sex dream, is a spontaneous orgasm during sleep that includes ejaculation for a male, or vaginal wetness or an orgasm (or both) for a female.
Non-penetrative sex or outercourse is sexual activity that usually does not include sexual penetration.
Terms oligospermia and oligozoospermia refer to semen with a low concentration of sperm and is a common finding in male infertility.
Oral sex, sometimes referred to as oral intercourse, is sexual activity involving the stimulation of the genitalia of a person by another person using the mouth (including the lips, tongue or teeth) or throat.
Orgasm (from Greek ὀργασμός orgasmos "excitement, swelling"; also sexual climax) is the sudden discharge of accumulated sexual excitement during the sexual response cycle, resulting in rhythmic muscular contractions in the pelvic region characterized by sexual pleasure.
The pelvic thrust is the thrusting motion of the pelvic region, which is used for a variety of activities, such as dance or sexual activity.
A penis (plural penises or penes) is the primary sexual organ that male animals use to inseminate sexually receptive mates (usually females and hermaphrodites) during copulation.
The perineum is the space between the anus and scrotum in the male and between the anus and the vulva in the female.
Postorgasmic illness syndrome (POIS) is a syndrome in which men have chronic physical and cognitive symptoms immediately following ejaculation in the absence of a local genital reaction.
Pre-ejaculate (also known as pre-ejaculatory fluid, pre-seminal fluid or Cowper's fluid, and colloquially as pre-cum) is a clear, colorless, viscous fluid that is emitted from the urethra of the penis during sexual arousal.
Premature ejaculation (PE) occurs when a man experiences orgasm and expels semen soon after sexual activity and with minimal penile stimulation.
The prostate (from Ancient Greek προστάτης, prostates, literally "one who stands before", "protector", "guardian") is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals.
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction.
The pudendal nerve is the main nerve of the perineum.
In human sexuality, the refractory period is usually the recovery phase after orgasm during which it is physiologically impossible for a man to have additional orgasms.
Retrograde ejaculation occurs when semen, which would, in most cases, be ejaculated via the urethra, is redirected to the urinary bladder.
Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa.
Sexual arousal (also sexual excitement) is the arousal of sexual desire, during or in anticipation of sexual activity.
Sexual penetration is the insertion of a body part or other object into a body orifice, such as the vagina, anus or mouth, as part of human sexual activity or animal sexual behavior.
Sexual stimulation is any stimulus (including bodily contact) that leads to, enhances and maintains sexual arousal, and may lead to orgasm.
The short-beaked echidna (Tachyglossus aculeatus) is one of four living species of echidna and the only member of the genus Tachyglossus.
Sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, inhibition of nearly all voluntary muscles, and reduced interactions with surroundings.
Sperm is the male reproductive cell and is derived from the Greek word (σπέρμα) sperma (meaning "seed").
Spermatorrhea is a condition of excessive, involuntary ejaculation.
A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body.
A stallion is a male horse that has not been gelded (castrated).
The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle.
The sympathetic nervous system (SNS) is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system.
A teaspoon is an item of cutlery, a measuring instrument, of approximately 5ml, or a unit of measurement of volume (usually abbreviated tsp.).
The testicle or testis is the male reproductive gland in all animals, including humans.
Testosterone is the primary male sex hormone and an anabolic steroid.
In anatomy, the urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body.
In mammals, the vagina is the elastic, muscular part of the female genital tract.
The wild boar (Sus scrofa), also known as the wild swine,Heptner, V. G.; Nasimovich, A. A.; Bannikov, A. G.; Hoffman, R. S. (1988), Volume I, Washington, D.C.: Smithsonian Institution Libraries and National Science Foundation, pp.
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