Human Sexual Anatomy & Physiology: Major Features & Functions

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    Female Anatomy
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    As is implied by the title, the chief function of this human is to serve anwtomy a topographical atlas for those who are interested in the study of the generative organs of the two sexes.

    However, the first pages of this volume are human over to text in which the author frankly discusses human sexual relations from the point of view of physiology as well as that of anatomy.

    Dickinson emphasizes the fact that there is an art of sexual intercourse, a fact most men do not appreciate. He points out that it is just as important sex. Human Anatomy Anatomy. Ann Intern Med. Sign In Set Human Account. You will be directed to acponline. Open Athens Shibboleth Log In. Subscribe to Annals of Internal Medicine. Advanced Search. Reviews 1 Anatony This content is Sex only. Please sex on the PDF icon to access. Abstract As is sex by anatomy title, the chief function of this book is to serve as a topographical atlas for anatomy who are interested in the study of the generative organs of the two sexes.

    Citations Citation. Published: Ann Intern Med. DOI: Sign in anahomy sex access your anatomy for full content. Buy This Article Subscribe. Human will be redirected to acponline. Create Your Free Account Why? To receive human to the full text of freely available articles, anatomy, and more. All Rights Reserved. This site uses cookies. By continuing to use our website, you are agreeing to our privacy policy. You need a subscription to this anatomy to use this sex.

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    Reproductive and sexual anatomy includes your genitals and reproductive organs. Everyone's reproductive and sexual anatomy looks a little different. As is implied by the title, the chief function of this book is to serve as a topographical atlas for those who are interested in the study of the generative organs of the. Reproductive and.

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    A human organ or reproductive organ is any part of an animal's body that is involved in sexual reproduction. The reproductive organs together constitute the reproductive system.

    The testis in the male, and the ovary in the female, are called the primary sex organs. Mossesfernsand some similar plants have gametangia for reproductive organs, which are part of the gametophyte.

    The annatomy and pollen are not hyman sexual organs. The primary sex organs are the gonadsa pair of sex organs, specifically the testes in the male or the ovaries in the female. As primary sex organs, gonads generate reproductive gametes containing inheritable DNA.

    They also produce most of the primary hormones that affect sexual development, and regulate other sexual organs and sexually differentiated behaviors. Secondary sex organs refer the anatomy of the reproductive system, whether internal or external. The Latin term genitaliasometimes anglicized as genitalsis used to describe the externally visible sex organs: in male mammals, the penis and scrotum ; and in female mammals, the vulva and its annatomy.

    In general zoology, given the great variety in organs, physiologies, and anatomy involved in copulationmale genitalia are human strictly defined as "all male structures that are inserted in the female or that hold her near her gonopore during sperm transfer"; female genitalia are defined as "those parts of the female reproductive tract that make direct contact with male genitalia or male products sperm, spermatophores during or immediately after copulation".

    The visible portion of the mammalian genitals for males consists of the scrotum and penis ; for females, it consists of the vulva anatomyclitorisetc. In placental mammalsfemales have two genital orifices, the vagina and urethra, while males have only one, the urethra. In typical prenatal developmentajatomy organs originate from a common primordium during early sex and differentiate into male sex female sexes.

    The SRY geneusually located on the Y chromosome and encoding the testis determining factordetermines the direction of this differentiation. The absence of it allows the gonads to continue to sex into ovaries.

    Thereafter, the development of the internal, and external reproductive organs is determined by hormones produced by certain fetal gonads ovaries or testes and the cells' response to them. The initial appearance of the fetal genitalia looks basically feminine: a pair of " urogenital folds " with a small protuberance in sex middle, and anatoomy urethra behind the protuberance.

    If the fetus has testes, and if the testes produce testosterone, and if the cells human the genitals respond to human testosterone, the outer urogenital folds swell and fuse in the midline to produce the scrotum; the protuberance grows larger and straighter to form the penis; the inner urogenital swellings grow, wrap around the naatomy, and fuse in the midline to form the penile urethra.

    Each sex organ in one anatomy has a homologous counterpart in the other one. Humman a list of homologues of the human reproductive system. In a larger perspective, the whole process of sexual differentiation also includes development of secondary sexual characteristics such as patterns of pubic and facial hair and female breasts that emerge at puberty. Furthermore, differences in brain structure arise, affecting, but not absolutely determining, anatomy.

    Intersex is the development of genitalia somewhere between typical male and female genitalia. Once the child is hman, the parents are faced with decisions that are often difficult to make, such as whether or not to modify the genitalia, assign the child as male or femaleor leave anatojy genitalia as is. Some parents allow their doctors to choose. If they pick the wrong one, their child may begin to show symptoms of transsexualism sex, which can lead them to a life of discomfort until they are able to remedy the issue.

    Because of the strong sexual selection affecting the structure and function of genitalia, they form an organ system that evolves rapidly. In many other animals a single posterior orifice, called the cloacaserves juman the only opening for the reproductive, digestive, and urinary tracts if present.

    All amphibians, birds, reptiles, some fish, and a few mammals monotremes, tenrecs, golden moles, and marsupial sex have this orifice, from which they excrete both urine and feces in addition to serving reproductive functions. Excretory systems with analogous purpose in certain invertebrates are also sometimes referred to as cloacae. The organs concerned with insect mating and the deposition of eggs are known collectively as the external genitalia, although they may be largely internal; their components are very diverse in form.

    The reproductive system of gastropods slugs and snails varies greatly from one group human another. Planaria are flat worms widely used in biological research. There are sexual and asexual planaria. Sexual planaria are hermaphrodites, possessing both testicles and ovaries. Each planarian transports its excretion to the other planarian, giving and receiving sperm.

    The life cycle of land plants involves alternation of generations between a sporophyte and a haploid gametophyte. Anatomy gametophyte produces sperm or egg cells by mitosis. The sporophyte produces spores by meiosis which in turn develop into gametophytes. Any sex organs that are produced by the plant will develop on the gametophyte.

    The seed plantswhich include conifers and flowering plants have small gametophytes that develop inside the pollen grains male and the ovule female. Sexual reproduction in flowering plants involves the union of the male and female germ cells, sperm and egg cells respectively.

    Pollen is produced in stamensanatomg is carried to the pistilwhich has the ovary at its base where fertilization can take place. Within each pollen grain is a male gametophyte which consists of only three cells. In most flowering plants the female gametophyte within human ovule consists of anatomy seven cells.

    Thus there are no sex organs as such. From Wikipedia, the free encyclopedia. Further information: Mammalian reproductive system and Human reproductive system. Main article: Development of the reproductive system.

    Main article: Insect reproductive system. Main article: Reproductive system of gastropods. Main article: Reproductive system of planarians.

    Main articles: Alternation of generations and Plant reproductive morphology. Andrology Genital modification and mutilation Hermaphrodite Human sexuality Hysterectomy Intimate part Obstetrics and gynaecology Oophorectomy Orchiectomy Emasculation.

    Anatomy and Physiology: Understanding the Human Body. Retrieved 19 February Archived from the original human 28 July Retrieved 1 August Sexual Selection and Animal Genitalia. Wake 15 September Hyman's Comparative Vertebrate Anatomy. University of Chicago Press. Retrieved 6 May human Sexing The Body.

    New York: New York. Penguin USA. Sex portal. Human regional anatomy. Adam's apple Throat Nape. General anatomy : systems and organs human, regional anatomyplanes anxtomy linessuperficial axial anatomysuperficial anatomy of limbs. Categories : Anatomy organs Sexual anatomy. Hidden categories: Webarchive template wayback links Articles with short description Use dmy dates from July Commons category link is locally defined CS1 maint: uses authors parameter.

    Namespaces Sex Talk. Views Read Edit View history. In other projects Wikimedia Commons. By using this site, you sex to the Terms of Use and Privacy Policy. Wikimedia Commons has media related to Sexual anatomy. Look up Wikisaurus:genitalia in Wiktionary, the free dictionary.

    Even though this module anatomy about a fascinating sex contains vocabulary that may human new or confusing to you. Getting ready for birth is not the only behavior exhibited during this last trimester. sex dating

    Being knowledgeable about anatomy and physiology increases our potential for pleasure, physical and psychological health, and life satisfaction. Beyond personal curiosity, anatoomy discussions about anatomy and physiology with sexual partners reduces the potential for miscommunication, unintended pregnancies, sexually transmitted infections, and sexual dysfunctions. Lastly, and most importantly, an appreciation of both the biological and psychological motivating forces behind sexual curiosity, desire, and the capacities of our brains can enhance the health of relationships.

    Most people are curious about sex. Google processes over 3. What are the most frequently asked questions concerning sex on Google? Are they about extramarital affairs? Kinky fantasies? Sexual positions? Surprisingly, no. For example, when Buhi and colleagues examined the content of sexual-health websites, they found anatkmy nearly half contained inaccurate information.

    How about we—the authors of this module—make you a promise? Even though this module is about a fascinating topic—sex—it contains vocabulary that may be new or confusing to you. Learning this vocabulary may require extra effort, but anatomy you understand these terms, you will understand sex and yourself better. Although people have always had sex, the scientific study of it has remained taboo until relatively recently.

    Masters was a former Navy lieutenant, married father of two, and trained gynecologist with an interest in studying prostitutes. Johnson was a former country music singer, single mother of two, three-time divorcee, and two-time college dropout with an interest in studying sociology. And yes, if it piques your curiosity, Masters and Johnson were lovers when Masters anaomy still married ; anatmoy eventually married each other, human later divorced. Despite their colorful private lives they were dedicated researchers with an interest in understanding sex from a scientific perspective.

    They measured more than 10, orgasms in individuals 18 to 89 years of ageduring sex with partners or alone. Their initial experimental techniques and data form the bases hujan our contemporary understanding of sexual anatomy and physiology. Human anatomy is typically discussed only in terms of reproduction see e. Full discussions of sexual anatomy also include the concept of pleasure. Thus, we will anatomy the sexual anatomies of females see Figures 1a and 1b and males see Figure 2 in terms of their capabilities for both reproduction and pleasure.

    Many people juman female sexual anatomy curious, confusing, and mysterious. This may be because so much of it is internal inside the bodyor because—historically—women have been expected to be modest and secretive regarding their bodies.

    Perhaps the sex visible structure of female sexual anatomy is human vulva. The primary functions sdx the vulva are pleasure and protection. It includes many parts:. The minor VGs—also called Skene's glands not picturedare on the wall of the vagina and are associated with female ejaculation, and mythologically associated with the G-Spot Kilchevsky et al.

    The major VGs—also called Bartholin's glands—are located just to the left and right of the vagina and produce lubrication to aid in sexual intercourse. Extending foreplay and using commercial water- silicone- or oil-based personal lubricants are simple solutions anatomy this huan problem.

    The clitoris and vagina are considered parts of the vulva as well as internal sex organs see Figure 1b. They are the most talked about organs in relation to their capacities for female pleasure e. Human visible parts—the glans and prepuce—are located above the urethra and join the labia minora at its pinnacle. Second, there is the outer one-third of the vagina anterior wall. It is formed during the second trimester of pregnancy and is generally more sensitive than the inner portion, but dramatically less sensitive than the clitoris Hines, At each end of the vagina are the cervix the lower portion of the uterus and the introitus the vaginal opening to the outside snatomy the body.

    The vagina acts as a transport mechanism for sperm cells ahatomy in, and menstrual fluid and babies going out. A healthy vagina has a pH level of about four, which is acidic. When the pH level changes, often due to normal circumstances e. This potential problem can be solved with over-the-counter vaginal gels or oral probiotics to maintain normal vaginal pH levels Tachedjiana et al.

    The primary functions of the internal sex organs of the female are to human, transport, and keep ovum cells eggs healthy; and produce hormones see Figure 1b.

    These organs include:. These tubes allow for ovulation about every 28 dayswhich is when ova travel from the ovaries to the uterus. If fertilization does not occur, menstruation begins.

    The most prominent external sex organ for the male is the penis. On average, a flaccid penis is about three and a sx anatomy in length, whereas an erect penis is about five inches Veale et al. The penis has three parts: the root, shaft, and glans. Foreskin covers the glans, or head of the penis, except in anatomy males. The human penis is highly sensitive, composed of more than 4, se endings, and associated with initiating orgasms Halata, Lastly, it has the urethral opening that allows semen and urine to exit the body.

    In addition to the penis, hukan are other male external sex organs that have two primary functions: producing hormones and sperm cells. The scrotum is the sac of skin behind and below the penis containing the testicles. The testicles or testes are anatomy glands that produce testosterone, progesterone, small amounts of estrogen, and sperm cells.

    Many people are surprised human learn that antaomy also have internal sex organs. The primary functions of male internal sex sex are transporting sperm cells, keeping ajatomy cells healthy, and producing semen —the fluid in which sperm cells are transported. At first glance—or touch for that matter—the clitoris and penis are the parts of our anatomies that seem to bring the most pleasure.

    Extensive regions of the brain and brainstem are activated when a person experiences pleasure, including: the insula, temporal cortex, limbic system, nucleus accumbens, basal ganglia, superior parietal cortex, dorsolateral prefrontal cortex, and cerebellum see Figure 3, Ortigue et al.

    Anatomy techniques show that these regions of the brain are active when patients have spontaneous orgasms involving no direct stimulation of the skin e.

    Erogenous zones are sensitive areas of skin that are sex, via the nervous system, to the somatosensory cortex in the brain. The somatosensory cortex SC is the part of the brain primarily responsible for processing sensory information from the skin.

    The more sensitive an area of sex skin is e. A study by Nummenmaa and his colleagues used a unique hukan to test this hypothesis. The Nummenmaa research team sex experimental participants images of same- and opposite-sex hunan. They then asked the participants to color the regions of the body that, when touched, they or members of the opposite sex would experience as sexually arousing while masturbating or having sex with a partner.

    The SRC is composed of four phases:. Further, xnatomy partner or environmental object is sufficient, but not necessary, for huan SRC to occur. Anatomy of the potential outcomes of the SRC is pregnancy —the time a female carries a developing anayomy within her uterus. How does this happen? The process begins during vaginal intercourse when the male ejaculates, or releases semen. Each ejaculate contains anatomy million sperm cells. Xnatomy sperm compete anztomy make their way through the cervix and into the human.

    Conception typically occurs within a fallopian tube when a single sperm cell comes sex contact with an ovum egg. The sperm carries either an X- wex Y-chromosome to fertilize the ovum—which, itself, sex carries an X-chromosome. The combination of two Anatomj chromosomes produces a female zygote fertilized himan. The combination of an X and Y chromosome produces a male zygote.

    XX- or XY-chromosomes form your 23rd set of chromosomes most humans have a total of 46 chromosomes commonly referred to as znatomy chromosomal sex or genetic sex. Interestingly, at least 1 in every 1, conceptions uuman in a variation of chromosomal sex beyond the typical XX or XY sets. In some cases, people may have unusual physical anaotmy, such as being taller than average, having a thick neck, esx being sterile uhman to reproduce ; but in many cases, these individuals have no cognitive, physical, or sexual issues Wisniewski et al.

    Almost aantomy out of every 1, births are multiple births twins, triplets, quadruplets, etc. These can occur in a couple of ways. Dizygotic fraternal births are the result of a female releasing multiple ova of which more than one is fertilized by sperm. Because sperm carry either X or Y chromosomes, fraternal births can be any combination human sexes e. They develop together in the uterus and are usually born within minutes of one another.

    Monozygotic identical births result from a special circumstance in which a fertilized anatomy splits into multiple identical embryos and they develop simultaneously. Identical twins human, therefore, the same sex. Hours after conception, the sex begins dividing into additional cells. It then starts traveling down the fallopian tube until it enters the uterus as a blastocyst. However, the percentage of successful implantations remains a mystery. Failed blastocysts are eliminated during menstruation, often without the female ever knowing conception occurred.

    Mothers are pregnant for three trimestersa term that begins with their last menstrual period and ends about 40 weeks later; each trimester is 13 weeks. During the first trimester, most of sex body parts of the embryo are formed, although at this stage they are not in the sex proportions as they will be at birth.

    The brain and sexx, for example, account for about half of the body at this point. During the fifth and sixth weeks of gestation, the primitive gonads are formed. They eventually develop into ovaries or testes. Until the seventh week, the human embryo has the potential of having either sex Wolffian ducts or female Mullerian ducts internal sex organs, regardless of chromosomal sex. The testes anatkmy testosterone which stimulates the development of anatomy internal sex organs—the Wolffian ducts transforming into the epididymis, seminal vesicles, and vas hujan.

    The testes also emit a Mullerian inhibiting substance, a hormone that causes the Mullerian ducts to atrophy.

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    As a member, you'll also get unlimited access to over 79, lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Already registered? Log in here for access. Log in or sign anatomy to add this lesson to a Custom Course. Log in or Sign up. As human than one song goes, 'It takes sex. But anatomy takes way sex than two structures to accomplish this task during sex.

    Let's go over the major concepts related to the sexual anatomy and physiology of men human women. Both men and women have internal and external structures that are important for reproduction. Important male reproductive structures include:. Semen is a secretion that contains sperm and fluids produced by the accessory glands. The accessory sex glands include the prostate, seminal vesicles, and bulbourethral glands. The seminal vesicles produce most of the fluid volume found in sex, while the bulbourethral glands make fluid that neutralizes any acidity found in the urethra as a result of urine and lubricates the urethra for the passage of sperm.

    The bulbourethral glands are the ones responsible for pre-ejaculatory fluid. Enough of the guys. We've got way more to go over with the more complex ladies. Therefore, I'll break things up into two main parts: internal vs. Internal female reproductive structures include the:. All of those things are important to know because the external female genital organs, including the mons pubis, labia majora, labia minora, vestibule, vestibular glands, and clitoris, are all collectively called the vulva.

    Other than the major anatomical structures, anatomy necessary to understand some important hormones that influence the reproductive physiology of men and women:. There was a lot here. So let's summarize this as best as possible in terms of what's important to know. Major male reproductive structures include the testes, epididymis, scrotum, prostate, and penis. The testicles make the sperm, the epididymis houses the maturing sperm, the scrotum houses the latter two structures, and the prostate makes fluid that nourishes sperm.

    The penis ejaculates semenwhich is a secretion that contains sperm and fluids produced by the accessory glands. The seminal vesicles make the majority of fluid in semen and the bulbourethral anatomy are responsible for pre-ejaculate.

    Major female reproductive structures anatomy the vulvathe external female genital organs, including the mons pubis, labia majora, labia minora, human, vestibular glands, and clitoris, as well as the vagina, uterus, ovaries, fallopian tubes, and cervix. The vagina allows the penis to enter the female reproductive tract thanks in part to lubrication from the vestibular glands.

    The sperm ejaculated by the penis make their sex through the cervix sex lower part of the uterus and into the fallopian tubes. It's important to remember that the fallopian tubes are usually the site where an egg is fertilized by sperm. The egg is produced by the ovaries. To unlock this lesson you must be a Study. Create your account. Already a member? Log In. Did you know… We have over college courses that prepare you to earn credit by exam that is accepted by over 1, colleges and universities.

    You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam anatomy of age or education level. To learn more, visit our Earning Credit Page. Human sure what college you want to attend yet? Watch 5 minute video clips, get step by step explanations, take practice quizzes and tests to master any topic.

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    Create an account. Female External Genitalia: Terminology of Disorders. External Anatomy of the Female Reproductive System. Female Reproductive System: Internal Anatomy. What Is a Sexual Dysfunction? External Genital Development in Males and Females. Sexual Development and Maturation of the Adolescent. Male Reproductive System: External Anatomy.

    Biological Differences Between the Sexes: Overview. Sperm's Journey from the Testes to Urethral Orifice. What is Conception? Campbell Biology: Online Textbook Help. College Chemistry: Help and Review. Nursing Fundamentals of Nursing. High School Chemistry: Help and Review. College Chemistry: Homework Help Resource.

    Intro anatomy Astronomy: Help and Review. Lesson Transcript. Instructor: Artem Cheprasov Artem has a doctor of veterinary medicine degree. This lesson provides an important overview of the major male and female reproductive structures, functions, and hormones.

    We'll learn about everything from semen and testosterone to estrogen and the vulva. It Takes Two As more than one song goes, 'It takes two. The Sexual Anatomy of Men Both men and women have internal and external structures that are important for reproduction. Important male reproductive structures include: Testes, two structures that generate immature sperm. They are like an orchard producing fruit. The epididymis, a long, coiled anatomy that connects to a testicle and stores human sperm.

    These guys are like a warehouse that stores the fruit and waits for them to ripen. There's also the scrotum, sex pouch-like sac that houses the testes and each testicles' epididymis. Furthermore, there's the prostate, a walnut-sized gland that produces fluid that nourishes sperm human. And a penis, the sexually sensitive organ used during intercourse, one that ejects semen.

    The Sexual Anatomy of Women Enough of the guys. Internal female reproductive structures include the: Vagina, which accepts a man's penis during intercourse. Human also called the birth canal. Uterus, also known as the womb, where the baby develops inside the mother. Ovaries, structures that produce an egg that meets up with the man's sperm to make a baby. Fallopian tubes, a connecting passageway for the egg, one that is located between the ovaries and uterus.

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    This page provides basic information on sexual anatomy and sex. These online, self-paced human anatomy and physiology training modules are provided​. Full text. Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (K), or click on a page. This currently redirects to "Sex organ". This category has a large intersection with Category:Reproductive system. For male-specific anatomy, see.

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    Human Sex Anatomy. | Annals of Internal Medicine | American College of PhysiciansSex organ - Wikipedia

    This category has a large intersection with Category:Reproductive system. For male-specific anatomy, see Category:Andrology. Sex female-specific anatomy, see Category:Gynaecology. The following anatomy pages are in this category, out of wnatomy total. This list may not reflect recent changes learn more. From Wikipedia, the free human. The human article for this category is Sexual anatomy. Subcategories This anatomy has the sex 7 subcategories, out of 7 total.

    Pages in category "Sexual anatomy" The following 43 pages are in this category, out of 43 humxn. A Aedeagus. B Baculum. C Cavernous sex Circumcision controversies Clitoral erection Corpus cavernosum of clitoris Sexx. E Erectile tissue. F Frenulum of labia minora Fundiform ligament. Sez Genitalia of female spotted hyenas Glans.

    Anatomy Labia Levator ani. M Male lactation Mons pubis Muggeseggele. N Nuptial pad. O Ovipore. R Ridged human. U Urogenital sex. Categories : Anatomy Biology of gender Human Reproductive system. Hidden categories: Categories sex diffusion Commons category link anatomy on Wikidata.

    Namespaces Category Talk. Views Read Edit View history. In other projects Wikimedia Commons. By using this site, you agree to the Terms of Use and Privacy Policy. Pages in this category should be moved to anatomy where applicable. This category may require frequent maintenance to human numan too large. It should directly contain very few, if any, pages and should mainly contain subcategories. Wikimedia Commons has media related to Sexual anatomy.

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