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Foreskins
In male human anatomy, the foreskin, also known as the prepuce (), is the double-layered fold of skin, mucosal and muscular tissue at the distal end of the human penis that covers the glans and the urinary meatus. The foreskin is attached to the glans by an elastic band of tissue, known as the frenulum. The outer skin of the foreskin meets with the inner preputial mucosa at the area of the mucocutaneous junction. The foreskin is mobile, fairly stretchable and sustains the glans in a moist environment. Except for humans, a similar structure known as a penile sheath appears in the male sexual organs of all primates and the vast majority of mammals. In humans, foreskin length varies widely and coverage of the glans in a flaccid and erect state can also vary. The foreskin is fused to the glans at birth and is generally not retractable in infancy and early childhood. Inability to retract the foreskin in childhood should not be considered a problem unless there are other symptoms. Ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preputial Mucosa
The preputial mucosa of the Human penis, penis is the epithelium of the inside of the prepuce, or foreskin. To differentiate it from the cutaneous Human skin, skin of the outside of the Foreskin, prepuce, it is sometimes referred to as the inner mucosa. It starts at the ridged band of the Foreskin, prepuce and continues to the coronal sulcus (groove behind the glans penis), where it meets the epithelium of the glans and penile shaft. The preputial mucosa is devoid of hair, as is the cutaneous surface. Weiss ''et al''. (1993) report the preputial mucosa contains fewer Langerhans cells than most mucosal epithelia. These cells secrete cytokines (a non-antibody protein that generates an immune response on contact with specific antigens), and are an essential part of the immune system. Fleiss ''et al''. (1998) point out that Weiss ''et al''. (1993) studied foreskins of neonates and their findings may not be applicable to adults. De Witte ''et al''. (2007) report that Langerhans cells pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glans Penis
In male human anatomy, the glans penis or penile glans, commonly referred to as the glans, (; from Latin ''glans'' meaning "acorn") is the bulbous structure at the Anatomical terms of location#Proximal and distal, distal end of the human penis that is the human male's most sensitive erogenous zone and primary anatomical source of Human sexuality, sexual pleasure. The glans penis is present in the male reproductive system, reproductive organs of humans and most other mammals where it may appear smooth, spiny, elongated or divided. It is externally lined with Mucosa, mucosal tissue, which creates a smooth texture and glossy appearance. In humans, the glans is located over the distal ends of the Corpus cavernosum penis, corpora cavernosa and is a continuation of the Corpus spongiosum (penis), corpus spongiosum of the penis. At the summit appears the urinary meatus and at the base forms the Corona of glans penis, corona glandis. An elastic band of tissue, known as the Penile frenulum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Male Reproductive System
The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction. These organs are located on the outside of the body, and within the pelvic cavity, pelvis. The main male sex organs are the human penis, penis and the scrotum, which contains the testicles that produce semen and sperm, which, as part of sexual intercourse, Fertilisation, fertilize an ovum in the female's body; the fertilized ovum (zygote) develops into a fetus, which is later born as an infant. The corresponding system in females is the female reproductive system. External genitalia Penis The penis is an intromittent organ with a long Body of penis, shaft, an enlarged bulbous-shaped tip called the Glans penis, glans and its foreskin for protection. Inside the penis is the Urethra#Male, urethra, which is used to ejaculation, ejaculate semen and to excrete urine. Both substances exit through the Urinary meatus, meatus. When a male becomes Sexual arousal, sex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Organ
A sex organ, also known as a reproductive organ, is a part of an organism that is involved in sexual reproduction. Sex organs constitute the primary sex characteristics of an organism. Sex organs are responsible for producing and transporting gametes, as well as facilitating fertilization and supporting the development and birth of offspring. Sex organs are found in many species of animals and plants, with their features varying depending on the species. Sex organs are typically differentiated into male and female types. In animals (including humans), the male sex organs include the testicles, epididymides, and penis; the female sex organs include the clitoris, ovaries, oviducts, and vagina. The testicle in the male and the ovary in the female are called the ''primary sex organs''. All other sex-related organs are known as ''secondary sex organs''. The outer parts are known as the genitals or external genitalia, visible at birth in both sexes, while the inner parts are refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratified Squamous Epithelium
A stratified squamous epithelium consists of squamous (flattened) epithelial cells arranged in layers upon a basal membrane. Only one layer is in contact with the basement membrane; the other layers adhere to one another to maintain structural integrity. Although this epithelium is referred to as squamous, many cells within the layers may not be flattened; this is due to the convention of naming epithelia according to the cell type at the surface. In the deeper layers, the cells may be columnar or cuboidal. There are no intercellular spaces. This type of epithelium is well suited to areas in the body subject to constant abrasion, as the thickest layers can be sequentially sloughed off and replaced before the basement membrane is exposed. It forms the outermost layer of the skin and the inner lining of the mouth, esophagus and vagina. In the epidermis of skin in mammals, reptiles, and birds, the layer of keratin in the outer layer of the stratified squamous epithelial surface is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratin
Keratin () is one of a family of structural fibrous proteins also known as ''scleroproteins''. It is the key structural material making up Scale (anatomy), scales, hair, Nail (anatomy), nails, feathers, horn (anatomy), horns, claws, Hoof, hooves, and the outer layer of skin in vertebrates. Keratin also protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong mineralization (biology), unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. Excessive keratinization participate in fortification of certain tissues such as in horns of cattle and rhinos, and armadillos' osteoderm. The only other biology, biological matter known to approximate the toughness of keratinized tissue is chitin. Keratin comes in two types: the primitive, softer forms found in all vertebrates and the harder, derived forms fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Body Of Penis
The body or shaft of the penis is the free portion of the human penis that is located outside of the pelvic cavity. It is the continuation of the internal root, which is embedded in the pelvis and extends to the glans. It is made up of the two corpora cavernosa and the corpus spongiosum on the underside. The corpora cavernosa are intimately bound to one another with a dorsally fenestrated septum, which becomes a complete one before the penile crura. The body of the penis is homologous to the female clitoral body. Structure The body of the penis is suspended from the pubic symphysis. It has two surfaces; the ''dorsal'' and the ventral or ''urethral''. The penile raphe runs on its ventral surface. The body is surrounded by a bi-layered model of tunica albuginea in which a distal ligament buttresses the glans penis and plays an integral role to the penile fibroskeleton, and the structure is called "os analog", a term coined by Geng Long Hsu in the Encyclopedia of Reproduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
22-05-18 Retractability 5 Diagr EN
The symbol , known in Unicode as hyphen-minus, is the form of hyphen most commonly used in digital documents. On most keyboards, it is the only character that resembles a minus sign or a dash, so it is also used for these. The name ''hyphen-minus'' derives from the original ASCII standard, where it was called ''hyphen (minus)''. The character is referred to as a ''hyphen'', a ''minus sign'', or a ''dash'' according to the context where it is being used. Description In early typewriters and character encodings, a single key/code was almost always used for hyphen, minus, various dashes, and strikethrough, since they all have a similar appearance. The current Unicode Standard specifies distinct characters for several different dashes, an unambiguous minus sign (sometimes called the ''Unicode minus'') at code point U+2212, an unambiguous hyphen (sometimes called the ''Unicode hyphen'') at U+2010, the hyphen-minus at U+002D and a variety of other hyphen symbols for various uses. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posthitis
Posthitis is the inflammation of the foreskin (prepuce) of the penis. It is characterised by swelling and redness on the skin and it may be accompanied by a malodorous discharge. The term ''posthitis'' comes from the Greek "posthe", meaning foreskin, and "-itis", meaning inflammation. Causes Posthitis can have infectious causes such as bacteria or fungi, or non-infectious causes such as contact dermatitis or psoriasis. The inflammation may be caused by irritants in the environment. Common causative organisms include candida, chlamydia, and gonorrhea. The cause must be properly diagnosed before a treatment can be prescribed. A common risk factor is diabetes. Posthitis can lead to phimosis, the tightening of the foreskin which makes it difficult to retract over the glans. Posthitis can also lead to superficial ulcerations and diseases of the inguinal lymph nodes. Prevention Hygiene, in particular the regular cleaning of the glans, is generally considered sufficient to prevent in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanitis
Balanitis is inflammation of the glans penis. Balanoposthitis is the proper term when the foreskin is also affected. Balanitis on boys in diapers must be distinguished from redness caused by ammoniacal dermatitis. Etymology The word ''balanitis'' is from the Greek βάλανος'' '', literally meaning 'acorn' because of the similarity in shape to the glans penis. ''-Itis'' is a suffix from the Greek for 'inflammation'. ''Posthe'' is the Greek word meaning 'foreskin'. Signs and symptoms * Small red erosions on the glans (first sign) * Redness of the foreskin * Redness of the penis * Other rashes on the head of the penis * Foul-smelling discharge * Painful foreskin and penis Complications Recurrent bouts of balanitis may cause scarring of the preputial orifice; the reduced elasticity may lead to pathologic phimosis. Further complications may include: * Stricture of urinary meatus * Paraphimosis Causes Inflammation has many possible causes, including irritation by environ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phimosis
Phimosis (from Greek language, Greek φίμωσις ''phimōsis'' 'muzzling') is a condition in which the foreskin of the Human penis, penis cannot stretch to allow it to be pulled back past the Glans penis, glans. A balloon-like swelling under the foreskin may occur with urination. In teenagers and adults, it may result in pain during an erection, but is otherwise not painful. Those affected are at greater risk of inflammation of the glans, known as balanitis, and other complications. In infancy, phimosis is considered physiological (normal). At birth, the foreskin is naturally adhered to the glans, and cannot be retracted. As the child ages, in most cases, the foreskin will naturally detach. In young boys, it is normal not to be able to pull back the foreskin at all. Over 90% of cases resolve by the age of seven, although full retraction is still prevented by balanopreputial adhesions in over half at this age. Occasionally, phimosis may be caused by an underlying condition s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
