154 relations: Allele, Amygdala, Aphrodisiac, Areola, Arousal, Baldwin effect, Blood pressure, Blue balls, Bonobo, Breast, Buttocks, Cervix, Clarkson University, Clitoral erection, Clitoral photoplethysmograph, Clitoris, Cognition, Corpus cavernosum penis, Corpus spongiosum penis, Cortisol, Cross-cultural studies, Dolphin, Dorsal veins of the penis, Ejaculation, Erectile tissue, Erection, Erogenous zone, Erotica, Estradiol, Estrogen, Ethology, Evolution, Evolution of sexual reproduction, Female sexual arousal disorder, Flushing (physiology), Foreplay, Foreskin, Gender role, Georgy Vasilchenko, Glans penis, Group selection, Gynecomastia, Hardy–Weinberg principle, Heart rate, Heterosexuality, Hierarchy, Homosexuality, Hormonal contraception, Hormone, Hug, ..., Human, Human penis, Human sexual activity, Human sexuality, Hypersexuality, Hypoactive sexual desire disorder, Hypothalamus, International Universities Press, Intimate relationship, Ivan Tarkhanov (physiologist), John Bancroft (sexologist), John Maynard Smith, Journal of Sex & Marital Therapy, Journal of Sex Research, Kazimierz Imieliński, Kinsey Reports, Kiss, Kurt Freund, Labia, Labia majora, Labia minora, Labial thermistor clip, Libido, Making out, Masters and Johnson, Masturbation, Mate choice, McGill University Health Centre, McGraw-Hill Education, Menopause, Montreal, Moscow, Nat Geo People, National Health Service, Neurohormone, New York City, Nipple, Nocturnal penile tumescence, Non-contact thermography, Nudity, Nudity and sexuality, Olfaction, Orgasm, Orgasm control, Oxytocin, Paraphilia, Pelvic floor, Pelvis, Penis, Perineum, Persistent genital arousal disorder, Polyandry, Pornography, Pre-ejaculate, Priapism, Prolactin, Prostate, Pseudo-penis, Psychoanalysis, Psychology Today, Pupillary response, Rape, Recreational drug use, Refractory period (sex), Reliability (statistics), Romance (love), Routledge, Scrotum, Seasonal breeder, Secondary sex characteristic, Seminal vesicle, Sex organ, Sexology, Sexual arousal disorder, Sexual desire, Sexual dimorphism, Sexual fantasy, Sexual fetishism, Sexual frustration, Sexual inhibition, Sexual intercourse, Sexual stimulation, Sociality, Somatosensory system, Spotted hyena, Stimulus (physiology), Stimulus (psychology), Temperature, Testicle, Testosterone, Thermal, Thermography, Tumescence, University of California, University of California, Berkeley, Urethra, Uterus, Vagina, Vaginal lubrication, Vaginal photoplethysmograph, Vas deferens, Vasocongestion, Vasodilation, Vulva. Expand index (104 more) » « Shrink index
An allele is a variant form of a given gene.
The amygdala (plural: amygdalae; also corpus amygdaloideum; Latin from Greek, ἀμυγδαλή, amygdalē, 'Almond', 'tonsil') is one of two almond-shaped groups of nuclei located deep and medially within the temporal lobes of the brain in complex vertebrates, including humans.
An aphrodisiac or love drug is a substance that increases libido when consumed.
The human areola (areola mammae, in. or) is the pigmented area on the breast around the nipple.
Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception.
In evolutionary biology, the Baldwin effect describes the effect of learned behavior on evolution.
Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels.
Blue balls is a slang term for the condition of temporary fluid congestion (vasocongestion) in the testicles accompanied by testicular pain, caused by prolonged sexual arousal in the human male without ejaculation.
The bonobo (Pan paniscus), formerly called the pygmy chimpanzee and less often, the dwarf or gracile chimpanzee, is an endangered great ape and one of the two species making up the genus Pan; the other is Pan troglodytes, or the common chimpanzee.
The breast is one of two prominences located on the upper ventral region of the torso of primates.
The buttocks (singular: buttock) are two rounded portions of the anatomy, located on the posterior of the pelvic region of primates (including humans), and many other bipeds or quadrupeds, and comprise a layer of fat superimposed on the gluteus maximus and gluteus medius muscles.
The cervix or cervix uteri (neck of the uterus) is the lower part of the uterus in the human female reproductive system.
Clarkson University is a private research university with its main campus located in Potsdam, New York, and additional graduate program and research facilities in New York State's Capital Region and Beacon, N.Y. It was founded in 1896 and has an enrollment of about 4,300 students studying toward bachelor's, master's, and doctoral degrees in each of its schools or institutes: the Institute for a Sustainable Environment, the School of Arts & Sciences, the School of Business and the Wallace H. Coulter School of Engineering.
Clitoral erection is a physiological phenomenon where the clitoris becomes enlarged and firm.
Clitoral photoplethysmography uses a direct current signal to measure clitoral blood volume (CBV).
The clitoris is a female sex organ present in mammals, ostriches and a limited number of other animals.
Cognition is "the mental action or process of acquiring knowledge and understanding through thought, experience, and the senses".
A corpus cavernosum penis (singular) (cavernous body of the penis) is one of a pair of sponge-like regions of erectile tissue, the corpora cavernosa (plural) (cavernous bodies), which contain most of the blood in the penis during an erection.
The corpus spongiosum is the mass of spongy tissue surrounding the male urethra within the penis.
Cortisol is a steroid hormone, in the glucocorticoid class of hormones.
Cross-cultural studies, sometimes called holocultural studies or comparative studies, is a specialization in anthropology and sister sciences (sociology, psychology, economics, political science) that uses field data from many societies to examine the scope of human behavior and test hypotheses about human behavior and culture.
Dolphins are a widely distributed and diverse group of aquatic mammals.
In human anatomy, the dorsal veins of the penis comprise the superficial dorsal vein of the penis and the deep dorsal vein of the penis.
Ejaculation is the discharge of semen (normally containing sperm) from the male reproductory tract, usually accompanied by orgasm.
Erectile tissue is tissue in the body with numerous vascular spaces that may become engorged with blood.
An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged.
An erogenous zone (from Greek ἔρως, érōs "love" and English -genous "producing" from Greek -γενής, -genḗs "born") is an area of the human body that has heightened sensitivity, the stimulation of which may generate a sexual response, such as relaxation, the production of sexual fantasies, sexual arousal and orgasm.
Erotica is any artistic work that deals substantively with erotically stimulating or sexually arousing subject matter.
Estradiol (E2), also spelled oestradiol, is an estrogen steroid hormone and the major female sex hormone.
Estrogen, or oestrogen, is the primary female sex hormone.
Ethology is the scientific and objective study of animal behaviour, usually with a focus on behaviour under natural conditions, and viewing behaviour as an evolutionarily adaptive trait.
Evolution is change in the heritable characteristics of biological populations over successive generations.
The evolution of sexual reproduction describes how sexually reproducing animals, plants, fungi and protists evolved from a common ancestor that was a single celled eukaryotic species.
Female sexual arousal disorder (FSAD) is a disorder characterized by a persistent or recurrent inability to attain sexual arousal or to maintain arousal until the completion of a sexual activity.
For a person to flush is to become markedly red in the face and often other areas of the skin, from various physiological conditions.
In human sexual behavior, foreplay is a set of emotionally and physically intimate acts between two or more people meant to create sexual arousal and desire for sexual activity.
In male human anatomy, the foreskin is the double-layered fold of smooth muscle tissue, blood vessels, neurons, skin, and mucous membrane part of the penis that covers and protects the glans penis and the urinary meatus.
A gender role, also known as a sex role, is a social role encompassing a range of behaviors and attitudes that are generally considered acceptable, appropriate, or desirable for people based on their actual or perceived sex or sexuality.
Georgy Stepanovich Vasilchenko (Георгий Степанович Васильченко; 1921–2006) was a Russian neuropathologist and the pioneer of sexology in the USSR.
The glans penis is the sensitive bulbous structure at the distal end of the human penis.
Group selection is a proposed mechanism of evolution in which natural selection acts at the level of the group, instead of at the more conventional level of the individual.
Gynecomastia is an endocrine system disorder in which a noncancerous increase in the size of male breast tissue occurs.
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
Heart rate is the speed of the heartbeat measured by the number of contractions of the heart per minute (bpm).
Heterosexuality is romantic attraction, sexual attraction or sexual behavior between persons of the opposite sex or gender.
A hierarchy (from the Greek hierarchia, "rule of a high priest", from hierarkhes, "leader of sacred rites") is an arrangement of items (objects, names, values, categories, etc.) in which the items are represented as being "above", "below", or "at the same level as" one another A hierarchy can link entities either directly or indirectly, and either vertically or diagonally.
Homosexuality is romantic attraction, sexual attraction or sexual behavior between members of the same sex or gender.
Hormonal contraception refers to birth control methods that act on the endocrine system.
A hormone (from the Greek participle “ὁρμῶ”, "to set in motion, urge on") is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.
A hug is a form of endearment, universal in human communities, in which two or more people put their arms around the neck, back, or waist of one another and hold each other closely.
Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina.
The human penis is an external male intromittent organ that additionally serves as the urinal duct.
Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality.
Human sexuality is the way people experience and express themselves sexually.
Hypersexuality is a clinical diagnosis used by mental healthcare professionals to describe extremely frequent or suddenly increased libido.
Hypoactive sexual desire disorder (HSDD) or inhibited sexual desire (ISD) is considered a sexual dysfunction and is characterized as a lack or absence of sexual fantasies and desire for sexual activity, as judged by a clinician.
The hypothalamus(from Greek ὑπό, "under" and θάλαμος, thalamus) is a portion of the brain that contains a number of small nuclei with a variety of functions.
International Universities Press, Inc. was a private publishing company of academic journals and books on psychotherapy and contiguous disciplines.
An intimate relationship is an interpersonal relationship that involves physical or emotional intimacy.
Ivan Romanovich Tarkhanov (Иван Романович Тарханов) or Ivane Tarkhnishvili (ივანე რამაზის–ძე თარხნიშვილი, თარხან-მოურავი; June 1846 – September 1908) was a Georgian physiologist and science populariser from the Tarkhan-Mouravi noble family.
Dr John H.J. Bancroft (born 1936) is a physician who was Director of The Kinsey Institute for Research in Sex, Gender, and Reproduction at Indiana University from 1995 to 2004.
John Maynard Smith (6 January 1920 – 19 April 2004) was a British theoretical and mathematical evolutionary biologist and geneticist.
The Journal of Sex & Marital Therapy is a peer-reviewed scientific journal published by Routledge (formerly Brunner/Mazel).
The Journal of Sex Research is a peer-reviewed academic journal covering the study of human sexuality and the field of sexology in general.
Kazimierz Imieliński (December 6, 1929 – July 16, 2010) was a Polish physician and the father of Polish sexology.
The Kinsey Reports are two books on human sexual behavior, Sexual Behavior in the Human Male (1948) and Sexual Behavior in the Human Female (1953), written by Alfred Kinsey, Paul Gebhard, Wardell Pomeroy and others and published by Saunders.
A kiss is the touch or pressing of one's lips against another person or an object.
Kurt Freund (17 January 1914 – 23 October 1996) was a Czech-Canadian physician and sexologist best known for developing phallometry (the objective measurement of sexual arousal in males), research studies in pedophilia, and for the "courtship disorder" hypothesis as a taxonomy of certain paraphilias (voyeurism, exhibitionism, toucherism, frotteurism, and what he called "preferential rape").
The labia are part of the female genitalia; they are the major externally visible portions of the vulva.
The labia majora (singular: labium majus) are two prominent longitudinal cutaneous folds that extend downward and backward from the mons pubis to the perineum.
The labia minora, Latin for smaller lips, singular: labium minus "smaller lip", also known as the inner labia, inner lips, vaginal lips or nymphae, are two flaps of skin on either side of the human vaginal opening in the vulva, situated between the labia majora (the Latin for larger lips; also called outer labia, or outer lips).
The labial thermistor clip is a device used measure the skin temperature of the labia minora and is associated blood engorgement.
Libido, colloquially known as sex drive, is a person's overall sexual drive or desire for sexual activity.
Making out is a term of American origin, dating back to at least 1949, and is used variously to refer to kissing, petting, and necking, but may also refer to non-penetrative sex acts such as heavy petting.
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.
Mate choice, also known as intersexual selection, is an evolutionary process in which selection is dependent on the attractiveness of an individual's phenotypic traits.
The McGill University Health Centre (MUHC, Centre universitaire de santé McGill) is one of two major healthcare networks in the city of Montreal, Quebec, and it is the only bilingual teaching hospital in the province.
McGraw-Hill Education (MHE) is a learning science company and one of the "big three" educational publishers that provides customized educational content, software, and services for pre-K through postgraduate education.
Menopause, also known as the climacteric, is the time in most women's lives when menstrual periods stop permanently, and they are no longer able to bear children.
Montreal (officially Montréal) is the most populous municipality in the Canadian province of Quebec and the second-most populous municipality in Canada.
Moscow (a) is the capital and most populous city of Russia, with 13.2 million residents within the city limits and 17.1 million within the urban area.
Nat Geo People, formerly known as Adventure One (A1) and National Geographic Adventure (commonly abbreviated to Nat Geo Adventure), was a subscription TV channel part of National Geographic Channels International and 21st Century Fox.
The National Health Service (NHS) is the name used for each of the public health services in the United Kingdom – the National Health Service in England, NHS Scotland, NHS Wales, and Health and Social Care in Northern Ireland – as well as a term to describe them collectively.
A neurohormone is any hormone produced and released by neuroendocrine cells (also called neurosecretory cells) into the blood.
The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.
The nipple is a raised region of tissue on the surface of the breast from which milk leaves the breast through the lactiferous ducts.
Nocturnal penile tumescence (abbreviated as NPT) is a spontaneous erection of the penis during sleep or when waking up.
Non-contact thermography, thermographic imaging or thermology is the field of thermography that derives diagnostic indications from infrared images of the human body.
Nudity, or nakedness, is the state of wearing no clothing.
Human sexual arousal and expression is often confused with partial or complete lack of clothing, though each condition exists exclusive of the other.
Olfaction is a chemoreception that forms the sense of smell.
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.
Orgasm control, also referred to as edging, peaking, or surfing,Extended Massive Orgasm, Steve and Vera Bodansky, (2000), pp.
Oxytocin (Oxt) is a peptide hormone and neuropeptide.
Paraphilia (previously known as sexual perversion and sexual deviation) is the experience of intense sexual arousal to atypical objects, situations, fantasies, behaviors, or individuals.
The pelvic floor or pelvic diaphragm is composed of muscle fibers of the levator ani, the coccygeus muscle, and associated connective tissue which span the area underneath the pelvis.
The pelvis (plural pelves or pelvises) is either the lower part of the trunk of the human body between the abdomen and the thighs (sometimes also called pelvic region of the trunk) or the skeleton embedded in it (sometimes also called bony pelvis, or pelvic skeleton).
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.
Persistent genital arousal disorder (PGAD), previously called persistent sexual arousal syndrome, is spontaneous, persistent, unwanted and uncontrollable genital arousal in the absence of sexual stimulation or sexual desire, and is typically not relieved by orgasm.
Polyandry (from πολυ- poly-, "many" and ἀνήρ anēr, "man") is a form of polygamy in which a woman takes two or more husbands at the same time.
Pornography (often abbreviated porn) is the portrayal of sexual subject matter for the exclusive purpose of sexual arousal.
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.
Priapism is a condition in which a penis remains erect for hours in the absence of stimulation or after stimulation has ended.
Prolactin (PRL), also known as luteotropic hormone or luteotropin, is a protein that is best known for its role in enabling mammals, usually females, to produce milk.
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.
A pseudo-penis is any structure found on an animal that, while superficially appearing to be a penis, is derived from a different developmental path.
Psychoanalysis is a set of theories and therapeutic techniques related to the study of the unconscious mind, which together form a method of treatment for mental-health disorders.
Psychology Today is a magazine published every two months in the United States since 1967.
Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve.
Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration carried out against a person without that person's consent.
Recreational drug use is the use of a psychoactive drug to induce an altered state of consciousness for pleasure, by modifying the perceptions, feelings, and emotions of the user.
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.
Reliability in statistics and psychometrics is the overall consistency of a measure.
Romance is the expressive and generally pleasurable feeling from an emotional attraction towards another person.
Routledge is a British multinational publisher.
The scrotum is an anatomical male reproductive structure that consists of a suspended dual-chambered sack of skin and smooth muscle that is present in most terrestrial male mammals and located under the penis.
Seasonal breeders are animal species that successfully mate only during certain times of the year.
Secondary sex characteristics are features that appear during puberty in humans, and at sexual maturity in other animals.
The seminal vesicles (glandulae vesiculosae), vesicular glands, or seminal glands, are a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals.
A sex organ (or reproductive organ) is any part of an animal's body that is involved in sexual reproduction.
Sexology is the scientific study of human sexuality, including human sexual interests, behaviors and functions.
Sexual arousal disorder is characterized by a lack or absence of sexual fantasies and desire for sexual activity in a situation that would normally produce sexual arousal, or the inability to attain or maintain typical responses to sexual arousal.
Sexual desire is a motivational state and an interest in “sexual objects or activities, or as a wish, or drive to seek out sexual objects or to engage in sexual activities”.
Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics beyond the differences in their sexual organs.
A sexual fantasy or erotic fantasy is a mental image or pattern of thought that stirs a person's sexuality and can create or enhance sexual arousal.
Sexual fetishism or erotic fetishism is a sexual fixation on a nonliving object or nongenital body part.
Sexual frustration or sexual starvation in humans is frustration caused by a discrepancy between a person's desired and achieved sexual activity.
A sexual inhibition is a conscious or subconscious constraint or curtailment by a person of behavior relating to specific sexual matters or practices or of a discussion of sexual matters.
Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.
Sexual stimulation is any stimulus (including bodily contact) that leads to, enhances and maintains sexual arousal, and may lead to orgasm.
Sociality is the degree to which individuals in an animal population tend to associate in social groups (Gregariousness) and form cooperative societies.
The somatosensory system is a part of the sensory nervous system.
The spotted hyena (Crocuta crocuta), also known as the laughing hyena, is a species of hyena, currently classed as the sole member of the genus Crocuta, native to Sub-Saharan Africa.
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment.
In psychology, a stimulus is any object or event that elicits a sensory or behavioral response in an organism.
Temperature is a physical quantity expressing hot and cold.
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.
A thermal column (or thermal) is a column of rising air in the lower altitudes of Earth's atmosphere, a form of atmospheric updraft.
Infrared thermography (IRT), thermal imaging, and thermal video are examples of infrared imaging science.
Tumescence is the quality or state of being tumescent or swollen.
The University of California (UC) is a public university system in the US state of California.
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public research university in Berkeley, California.
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.
The uterus (from Latin "uterus", plural uteri) or womb is a major female hormone-responsive secondary sex organ of the reproductive system in humans and most other mammals.
In mammals, the vagina is the elastic, muscular part of the female genital tract.
Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina.
Vaginal photoplethysmography (VPG, VPP) is a technique using light to measure the amount of blood in the walls of the vagina.
The vas deferens (Latin: "carrying-away vessel"; plural: vasa deferentia), also called ductus deferens (Latin: "carrying-away duct"; plural: ductus deferentes), is part of the male reproductive system of many vertebrates; these vasa transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation.
Vasocongestion is the swelling of bodily tissues caused by increased vascular blood flow and a localized increase in blood pressure.
Vasodilation is the widening of blood vessels.
The vulva (wrapper, covering, plural vulvae or vulvas) consists of the external female sex organs.
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