A report on Penis and Clitoris

Mallard pseudo-penis
The internal anatomy of the human vulva, with the clitoral hood and labia minora indicated as lines. The clitoris extends from the visible portion to a point below the pubic bone.
Females have corkscrew vaginas with many blind pockets designed for difficult penetration and to prevent becoming pregnant. This reduced the likelihood of fertilization by unwanted aggressors in favor of fitter mates.
Stages in the development of the clitoris
External male genitalia of a Labrador Retriever
Created by Helen O'Connell using MRI, the first 3D image of a clitoris in an erect state with the adjacent organs of the uterus and urinary bladder
Penises of minke whales on display at the Icelandic Phallological Museum
Clitoris; deep dissection
Genitorinary system of a raccoon (Procyon lotor)
A partially exposed clitoral glans, which can't be fully exposed due to a mild case of adhesions to the clitoral hood
Penis of a human, with pubic hair removed to show anatomical detail
Structures of the vulva, including external and internal parts of the clitoris
The spine-covered penis of Callosobruchus analis, a bean weevil
The clitoral hood has a normal anatomical variation in size and appearance in different adult women: while it is completely covered by the labia majora in some women, standing with their legs closed, in others it is pronounced and clearly visible.
Clitoral hood (1) and clitoris (2). Labia are spread apart on the bottom image.
An enlarged clitoris due to clitoromegaly
De re anatomica
A Georg Ludwig Kobelt illustration of the anatomy of the clitoris
Girl protesting for clitoris-awareness at a women's rights rally in Paris, 2019
With a urogenital system in which the female urinates, mates and gives birth via an enlarged, erectile clitoris, female spotted hyenas are the only female mammals devoid of an external vaginal opening.
Male and female reproductive systems of the spotted hyena, from Schmotzer & Zimmerman, Anatomischer Anzeiger (1922). Abb. 1 (Fig. 1.) Male reproductive anatomy. Abb. 2 (Fig. 2.) Female reproductive anatomy. Principal abbreviations (from Schmotzer & Zimmerman) are: T, testis; Vd, vas deferens; BU, urethral bulb; Ur, urethra; R, rectum; P, penis; S, scrotum; O, ovary; FT, tuba Fallopii; RL, ligament uteri; Ut, uterus; CC, Corpus clitoris. Remaining abbreviations, in alphabetical order, are: AG, parotid analis; B, vesica urinaria; CG, parotid Cowperi; CP, Corpus penis; CS, corpus spongiosum; GC, glans; GP, glans penis; LA, levator ani muscle; Pr, prepuce; RC, musculus retractor clitoris; RP, Musculus retractor penis; UCG, Canalis urogenital.

Unlike the penis, the male homologue (equivalent) to the clitoris, it usually does not contain the distal portion (or opening) of the urethra and is therefore not used for urination.

- Clitoris

During copulation, the spotted hyena inserts his penis through the female's pseudo-penis instead of directly through the vagina, which is blocked by the false scrotum and testes.

- Penis
Mallard pseudo-penis

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Overall

Diagram of the female human reproductive tract and ovaries

Vagina

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Elastic, muscular part of the female genital tract.

Elastic, muscular part of the female genital tract.

Diagram of the female human reproductive tract and ovaries
Pelvic anatomy including organs of the female reproductive system
An illustration showing a cut-away portion of the vagina and upper female genital tract (only one ovary and fallopian tube shown). Circular folds (also called rugae) of vaginal mucosa can be seen.
Medium-power magnification micrograph of a H&E stained slide showing a portion of a vaginal wall. Stratified squamous epithelium and underling connective tissue can be seen. The deeper muscular layers are not shown. The black line points to a fold in the mucosa.
Folds of mucosa (or vaginal rugae) are shown in the front third of a vagina.
A disposable plastic bi-valved vaginal speculum used in gynecological examination
A normal cervix of an adult as seen through the vagina (per vaginam or PV) using a bivalved vaginal speculum. The blades of the speculum are above and below and stretched vaginal walls are seen on the left and right.
Pre-menopausal vaginal mucosa (left) versus menopausal vaginal mucosa (right)
An ultrasound showing the urinary bladder (1), uterus (2), and vagina (3)
The womb represents a powerful symbol as the yoni in Hinduism. Pictured is a stone yoni found in Cát Tiên sanctuary, Lam Dong, Vietnam.
A sheep gives birth by vagina.

The texture of the vaginal walls creates friction for the penis during sexual intercourse and stimulates it toward ejaculation, enabling fertilization.

Most women require direct stimulation of the clitoris to orgasm.

Vulvas of different women (pubic hair removed in some cases)

Vulva

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The vulva (plural: vulvas or vulvae; derived from Latin for wrapper or covering) consists of the external female sex organs.

The vulva (plural: vulvas or vulvae; derived from Latin for wrapper or covering) consists of the external female sex organs.

Vulvas of different women (pubic hair removed in some cases)
Labeled image of a vulva, showing external and internal views
Vulva with visible parts of the clitoris and the parts lying under the skin
Muscles underlying the vulva and perineum
The length of the labia minora varies significantly between women: while the labia majora completely enclose the labia minora in some women (top row), in other women they protrude and are clearly visible in upright standing position (bottom row). Colloquially, these variations of the labia are also referred to as "innies" and "outies".
Genital tubercle of female at fourteen weeks
Development of genitals showing homologues from indifferent at A to both sexes - female on right
Development of genitals showing homologues from indifferent to both sexes
Non-aroused vulva on the left and a sexually aroused vulva on the right with enlarged and shiny labia minora from vaginal lubrication and vasocongestion
Water warts of molluscum contagiosum
Pubic hair with crab lice
The Labia pride movement resents the ideals of female cosmetic genital surgeries: The Muff March in London, 2011
Female genital piercings include the Nefertiti piercing central and the Christina piercing pictured on either side
Derived from traditional symbols, Hanabira scarification is intended to decorate the pubic area
A gynaecological examination being carried out in 1822
Japanese artist Megumi Igarashi with vulva portrayal
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Glans clitoris with small distance to the opening
Glans clitoris with medium distance to the opening
Lack of contact of the clitoral glans with the penis
Contact of the clitoral glans with the penis with small CUMD
Classification of the 200 women into CUMD categories
Selection of women studied and interviewed
Vulva handsign used as a yogic mudra
Attic red-figure lid. Three female organs and a winged phallus.
Yoni at Mahadev temple
Glans clitoris with medium distance to the opening

The vulva includes the mons pubis (or mons veneris), labia majora, labia minora, clitoris, vestibular bulbs, vulval vestibule, urinary meatus, the vaginal opening, hymen, and Bartholin's and Skene's vestibular glands.

The clitoris is the homologue of the penis, and the clitoral hood is the female equivalent of the male foreskin, and may be partially or completely hidden within the pudendal cleft.

A flaccid penis, with surrounding pubic hair removed to show anatomical detail

Human penis

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External male intromittent organ that additionally serves as the urinal duct.

External male intromittent organ that additionally serves as the urinal duct.

A flaccid penis, with surrounding pubic hair removed to show anatomical detail
Lateral cross section of the penis
Anatomical diagram of a human penis
Various sized penises
Stages in the development of the male external genitalia
A urinating puer mingens by Annibale Carracci, 1600, Palazzo Farnese
The development of a penile erection, also showing the foreskin gradually retracting over the glans. 
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See also: Commons image gallery''
A ventral view of a penis flaccid (left) and erect (middle); a dorsal view of a penis erect (right).
Hypospadias
Kanamara Matsuri festival in Japan
Papuan man wearing traditional penis sheath
A labelled dorsal view of a circumcised penis: (1) Shaft, (2) Circumcision scar, (3) Corona, (4) Glans, (5) Meatus.
Dissection showing the fascia of the penis as well as several surrounding structures
Image showing innervation and blood-supply of the human male external genitalia

The main parts are the root (radix); the body (corpus); and the epithelium of the penis including the shaft skin and the foreskin (prepuce) covering the glans penis.

Most of the penis develops from the same embryonic tissue as the clitoris in females.

The sex organs of a green algae Chara are the male antheridia (red) and female archegonia (brown).

Sex organ

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Any part of an animal or plant that is involved in sexual reproduction.

Any part of an animal or plant that is involved in sexual reproduction.

The sex organs of a green algae Chara are the male antheridia (red) and female archegonia (brown).
The female genitalia of Lepidoptera

The Latin term genitalia, sometimes anglicized as genitals, is used to describe the externally visible sex organs: in male mammals, the penis and scrotum; and in female mammals, the vulva and its organs.

The visible portion of the mammalian genitals for males consists of the scrotum and penis; for females, it consists of the vulva (labia, clitoris, etc.) and vagina.

Baculum of a dog's penis; the arrow shows the urethral sulcus.

Baculum

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Baculum of a dog's penis; the arrow shows the urethral sulcus.
A raccoon baculum
Walrus baculum, around 22 in long

The baculum (also penis bone, penile bone, or os penis, os genitale or os priapi ) is a bone found in the penis of many placental mammals.

The homologue to the baculum in female mammals is known as the baubellum or os clitoridis (also os clitoris), a bone in the clitoris.

Human glans penis (dorsal view)

Glans penis

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Bulbous structure at the distal end of the human penis that is the most sensitive erogenous zone and primary anatomical source of male sexual pleasure.

Bulbous structure at the distal end of the human penis that is the most sensitive erogenous zone and primary anatomical source of male sexual pleasure.

Human glans penis (dorsal view)
The male anatomy showing the location of the glans penis
Internal anatomy of human glans penis: 1. Fascia penis 2. Corpus cavernosum 3. Coronal sulcus 4. Corona of glans 5. Foreskin 6. Glans penis 7. Meatus of the urethra 8. Navicular fossa of male urethra 9. Tunica albuginea of penis 10. Corpus spongiosum 11. Urethra

It is anatomically homologous to the clitoral glans.

In comparison, the glans of felids is short and spiny, while that of viverrids is smooth and long.

Transverse section of the penis.

Corpus cavernosum penis

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Transverse section of the penis.
Structure of the penis
The deeper branches of the internal pudendal artery.
The penis in transverse section, showing the bloodvessels.
Male pelvic organs seen from right side.
Diagram of the arteries of the penis.
Cross section of penis.
Medical ultrasonography of a normal penis.

A corpus cavernosum penis (singular) (literally "cave-like body" of the penis, plural corpora cavernosa) is one of a pair of sponge-like regions of erectile tissue, which contain most of the blood in the penis during an erection.

Such a corpus is homologous to the corpus cavernosum clitoridis in the female; the body of the clitoris that contains erectile tissue in a pair of corpora cavernosa with a recognisably similar structure.

Martin van Maële's print Francion 15

Sexual arousal

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Sexual arousal (also known as sexual excitement) describes the physiological and psychological responses in preparation for sexual intercourse or when exposed to sexual stimuli.

Sexual arousal (also known as sexual excitement) describes the physiological and psychological responses in preparation for sexual intercourse or when exposed to sexual stimuli.

Martin van Maële's print Francion 15
Two birds that appear to be exhibiting affection

In a woman, sexual arousal leads to increased blood flow to the clitoris and vulva, as well as vaginal transudation - the seeping of moisture through the vaginal walls which serves as lubrication.

The ring surrounds the penis, but does not constrict or cause discomfort.

The urethra transports urine from the bladder to the outside of the body. This image shows (a) a female urethra and (b) a male urethra.

Urethra

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Tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males.

Tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males.

The urethra transports urine from the bladder to the outside of the body. This image shows (a) a female urethra and (b) a male urethra.
The human male urethra laid open on its anterior (upper) surface
Micrograph of urethral cancer (urothelial cell carcinoma), a rare problem of the urethra.
Position of the urethra in males
Transverse section of the penis
Male urethral opening on glans penis
Female urethral opening within vulval vestibule
Muscles of the female perineum
Urethra. Deep dissection. Serial cross section.
Diagram which depicts the membranous urethra and the spongy urethra of a male

Its length differs between the sexes, because it passes through the penis in males.

In the human female, the urethra is about 4 cm long, and exits the body between the clitoris and the vagina, extending from the internal to the external urethral orifice.

Cross section showing the two corpora cavernosa near the top surface of the penis, and the corpus spongiosum surrounding the urethra near the bottom surface.

Erectile tissue

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Tissue in the body with numerous vascular spaces, or cavernous tissue, that may become engorged with blood.

Tissue in the body with numerous vascular spaces, or cavernous tissue, that may become engorged with blood.

Cross section showing the two corpora cavernosa near the top surface of the penis, and the corpus spongiosum surrounding the urethra near the bottom surface.

Erectile tissue exists in places such as the corpora cavernosa of the penis, and in the clitoris or in the bulbs of vestibule.