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ادامه مطلب 

Hymen  

•       (HI-min) (The hymen is a thin, delicate- membrane   membrane is like skin but much thinner). It partially covers the opening of the vagina in most girls.

•       The hymen is simply the vestigial membranes of the vagina and urogenital sinus at their point of fusion.

•       An elastic and collegenous tissue.

•       In younger women, hymen is very vascular as opposed to menopausal women, which are very thin.

•       In adult virginal women, the hymen is a different thickness that surrounds the vaginal opening more or less completed  

•       The biological function of the human hymen is still uncertain;

•       scientists hypothesize that it protects the vagina from infection in infants.

•       The social function of the hymen, however, has been and still is a mythical symbol of virginity in many cultures

•       Allow outflow of menestrual blood

Types

•       Annular or circular – – in which the hymen forms a ring around the vaginal opening

•       dentate

•       fimbriated or denticular hymen --   a hymen with an opening which has serrate edges

•       crescentric or  lunar hymen,   a moon-shaped hymen.-- anrerior , posterior

•       hymen bifenestra¢tus,  --  a hymen with two openings side by side and a broad septum between them.

•       Septate –  a hymen in which the opening is divided by a narrow septum.

•       hymen subsep¢tus--  a hymen in which the opening is partially filled by a septum growing out of one wall, but not reaching the other.

•       Cribriform or fenestrated -- full of holes

•       Complete absence of hymen

•       Microperforate  --almost completely covers the opening but there is  the opening which is very small

•       Imperforate --completely covers the opening

None secutal tear cuases

•       Many girls and teens tear or otherwise dilate their hymen

•       during first intercourse (coitus) or Rape .

•       while participating in sports like bicycling, horseback riding, gymnastics

•       or inserting tampons,

•       or while masturbating.

•        A girl may not even know this has occurred, since there may be little or no blood or pain involved when this happens.

•         The hymental opening As a role, the hymen is torn during first intercourse (coitus) specially posteriorly or posterolaterally in two or more portions.

•         commonly , rupture of the hymen is accompanied by slight bleeding, which stop spontaneously

•         Occasionly  a rather large vessel is torn and can bleed profuesly that can cause shock and need of blood transfusion , it can be controlled by applying direct pressure to bleeding point but if it fail you must ligate or suture bleeding point

•         The hymen may not be lacerated even with repeated coitus ( wide or elastic hymen ).

•         In fact, many cases of pregnancy have been reported in women in whom the hymen has not have been ruptured.

•         Some women are even born without a hymen

A woman's future can hang,                           

literally, by a membrane

•         The hymen's a delicate membrane that separates girls from women

•         In some societies, the hymen must be intact in unmarried women as proof of virginity.

•          Without it,-- women are shunned as whores

                    --in extreme cases even murdered by male  relatives to restore family

honour.

Virgin

•         The term "virgin" typically means someone who has never had sexual intercourse (specifically the penis entering the vagina)

•         a man loses his virginity the first time his penis
enters the vagina. Similarly, a woman loses her virginity the first time a penis enters her vagina

•         For the most part, being a virgin is not about whether a woman's hymen is intact or broken

•         It used to be that on her wedding night, if a woman's first sexual intercourse (losing her virginity) was painful and there was blood on the sheets, that was proof that she was a virgin