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Male and female anatomy study guides

by: Jimmydmoynihan

Male and female anatomy study guides SOC 152A

Marketplace > University of California Santa Barbara > Social Science > SOC 152A > Male and female anatomy study guides

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About this Document

Structure location and function with extra information from the book and lecture
Sociology of Human Sexuality
John Baldwin and Janice Baldwin
Study Guide
Human, sex, sexuality, male, female, genital, anatomy, penis, vagina
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This 6 page Study Guide was uploaded by Jimmydmoynihan on Friday October 7, 2016. The Study Guide belongs to SOC 152A at University of California Santa Barbara taught by John Baldwin and Janice Baldwin in Summer 2016. Since its upload, it has received 7 views. For similar materials see Sociology of Human Sexuality in Social Science at University of California Santa Barbara.


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Date Created: 10/07/16
Anatomical Part Structure Location Function MaleAnatomy Penis -Shaft is external portion of penis -External male genitalia -Involved in sexual arousal, excretion of urine and -contains 3 erectile transfer of sperm structures▯two corpora cavernosa and one corpus spongiosum -Root is internal portion of penis -lies in the body -approx. 2 inches long -connects the underlying structures of the shaft to the pelvic cavity Glans (Head) -Smooth, acorn shaped -At the tip of the penis -same as the glans of the female clitoris -Well-endowed with nerve endings -Very sensitive -Acorn shaped -Before the erection there is much more variation in size Foreskin (Prepuce) -Loose tubular fold of skin -Partially or completely covers the glans -Unclear -May protect the glans -Box 3.1 on p. 67 on circumcision cultural diversity *Smegma▯can build up under the foreskin and develop a foul smell/taste; can be avoided with regular cleaning -uncircumcised males are more likely to contract HIV than uncircumcised males -3X greater risks of contracting STDs especially chlamydia warts herpes UTIs gonorrhea HIV/AIDS Cavernous Bodies (Corpora -Two erectile structures located -Twin structures that lie side by side along -Fill with blood during arousal Cavernosa) within the shaft of the penis the upper side of the penis -Account for most of the penile erectile ability Spongy Body (Corpus Spongiosum) -Erectile structure located within the -Near the midline of the penis -Spongiosum raises visible ridge on the underside shaft of the penis -On its lower surface Surrounds the urethra of the penis during sexual arousal -Extends from the shaft into the glans -Glans is always softer Urethra & Urethral Opening -Narrow tube -Urethra located in the shaft -Transport of urine and semen -Urethral opening located on the glans near the frenulum Corona & Frenulum -Corona▯rim of glans -Corona▯located around the glans -Corona and frenulum are usually the most -Frenulum▯strip of loose skin on -Frenulum▯runs between the glans and erotically sensitive regions the underside of the penis the shaft -Skin from the shaft to the glans PC (Pubococcygeous) Muscle -Underlies/supports pelvic organs -Underlies/supports pelvic organs -Contraction during sex stiffens vaginal walls -Contractions stronger at orgasm -prevents urinary/fecal leakage -PC muscle control can allow men the ability to delay ejaculation Scrotum -Sack like -Located behind the penis -Contains testicles -Can move based on activity and weather -Maintains proper testicle temperature -Stimulation of the scrotum is sexually arousing to most men Internal Genitalia Testicles -Twin egg-shaped structures -Located in the scrotum -Have two main functions -produce sperm -secrete sex hormones *Akin to ovaries in women *See figure 3.10 on p. 75 Seminiferous Tubules -Convoluted microscopic tubes -Located inside each testis -Production of sperm (spermatogenesis) -Each about 3 ft -Wound together tightly -Hundreds of feet in length Sperm -Head: contains genetic information -Produced in seminiferous tubules -Fertilization of ovum (egg) -Tail: motility *Each man produces about 100 million sperm per day Interstitial Cells -Between seminiferous tubules in testis -Secrete sex hormones -Make testosterone Epididymis -Convoluted tube -One on each testicle -Site of sperm maturation and storage -Above and behind the testes -Gather nutrients before ejaculation -One on tope of each testicle -Some die and are reabsorbed Vas Deferens (Vas) -Tube -In between the epididymis and the -Transport and storage of mature sperm from the ejaculatory duct epididymis to the ejaculatory duct -Goes around the urinary bladder on each - side -Bring it toward the back of the body towards ejaculatory ducts inside the prostate gland Ejaculatory Duct -Formed by the junction of the vas -Located in the Prostate -Empties into urethra within the prostate and the duct of the seminal vesicle Prostate Gland -Single gland slightly larger than a -Located at the base of the bladder that -Prostate secretions (a cloudy, alkaline fluid) are a walnut surrounds the urethra major component of semen *Read boxes 3.3 and 3.4 on testicle and prostate disorders (p. 77 and 78) Seminal Vesicles -Two glands -Situated to either side of the prostate -NOT storage areas for sperm (located behind the bladder) -Add their own secretions to semen -Secrete a fluid that allows the tails on sperm to move(swimming motion) -Fluid comes 30% from the seminal vesicles and 70% by the prostate Bulbourethral Glands & Pre-cum -Two pea sized glands -Near the root of the penis (below the -Their secretions (often called pre-cum) are (Cowper’s Glands) prostate gland) excreted prior to ejaculation -Produces a basic alkaline fluid to neutralize the acid from urine in the urethra (acid damages sperm) -Can be leftover sperm inside the secretion -Can transmit STDs -Put the condom on early **This chart was created at the courtesy of Shaleena Reyersbach & Stefano Maiozzi-Testa. May not be reproduced without permission. Copyright© 2012 by Reyersbach & Maiozzi-Testa . Anatomical Part Structure Location Function FemaleAnatomy Vulva - Entire external genital area in a -External genital area in a woman woman Mons Veneris (Mons) -Fatty tissue covered by skin and -Above the vulva -Padding during coitus pubic hair -Contains many nerve endings Labia Majora (Outer Lips) -Padded with fatty tissue -Extends from the mons downward on -Erotically sensitive -Partially covered with hair either side of the vulva Labia Minora (Inner Lips) -Hairless -Lie between the labia majora -Very erotically sensitive (more so than the labia -Twin folds of skin majora) -Swell and darken due to vasocongestion Clitoral Hood (Prepuce) -Hood that covers the clitoris -Located where the labia minora meet -Covers the clitoris Clitoris - Made up of spongy tissure -Located where the labia minora meet - Erectile▯two cavernous bodies and one spongy -Internal and external portions -Under the clitoral hood body (just like the penis) -glans: small, pearl sized knob; -Highly sensitive▯continual, proper stimulation visible portion will produce orgasm in most women -shaft: about 1 inch in length; runs upwards from the glans under the clitoral hood Vaginal Opening (Introitus) - Entrance to the vagina -Located in between the labia minora and -Entrance to the vagina the rear of the vestibule Hymen - Incomplete or perforated membrane -Covers the vaginal opening -No known function -May have cultural significance Perineum -Hairless strip of skin -Located between the vaginal opening and -Erotically sensitive the anus -Cut during an episiotomy PC (Pubococcygeous) Muscle -Underlies/supports pelvic organs -Underlies/supports pelvic organs -Contraction during sex stiffens vaginal walls -Contractions stronger at orgasm -prevents urinary/fecal leakage -helps keep semen in the vagina Female Reproductive System Vagina - Vaginal walls highly elastic -Outermost portion of the reproductive -Transport of sperm -Consists of 3 layers tract -Serves as birth canal -mucosa -Physiological changes during arousal -intermediate muscular -vasocongestion -fimbro-elastic -lubrication Grafenberg Spot (G-Spot) - May be remnant of the prostate -Located on the front wall of the vagina -Area of heightened sensitivity gland -Approximately 1-2 inches from the vaginal entrance Cervix - Separates the uterus from the -Located at the back of the vagina - -Separates the uterus from the vagina vagina -Bottom/small end of the uterus -Holds the fetus in the uterus until delivery -Holds the fetus in the uterus until delivery -The “Os” -constricted opening of the cervix that connects the vagina to a short canal opening into the uterus Uterus (Womb) - Small, hollow, upside-down pear -Lies within the pelvic cavity -Carries the developing fetus until term shaped organ -3 layers -endometrium -inner lining; sheds during menstruation; where fertilized egg(s) implant -myometrium -middle muscular wall; composed primarily of smooth muscle; contracts during birth -perimetrium -outer tough, stretchable tissue; separates uterus from pelvic cavity; protects fetus Oviducts (Fallopian Tubes) -About 4 inches long -Forms a pathway between the uterus and -Where fertilization takes place -About the diameter of a piece of the left and right ovaries spaghetti Fimbria -Fingerlike projections of the -Located on the ovary side of each oviduct -Catch the ovum from the ovary oviducts Cilia -Small hairlike structures -Located inside oviducts -Their movement propels the ovum from each ovary to the uterus Ovaries -Egg-shaped (1-1 ½ inch) paired -Located on either side of the uterus -Release of a mature ova in a process called organs ovulation -production and secretion of sex hormones (table 2.1 on p. 43) Follicle -Site of egg development -Many located in each ovary -Site of egg development -Ovum = mature female gamete prior to or just following fertilization Breasts, Nipples,Areola -Alveolus▯microscopic cavities -Mammary glands lie between the skin and -Have both erotic and reproductive significance where breast milk is produced the muscle of the chest wall -Fat makes the breasts bigger -Areola▯surrounds the nipple -breast implants make it harder to reveal breast cancer through mammograms -Soy implants have a more natural shape and allow x rays to pass through . **This chart was created at the courtesy of Shaleena Reyersbach & Stefano Maiozzi-Testa. May not be reproduced without permission. Copyright© 2012 by Reyersbach & Maiozzi-Testa


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